From 92491c0769f8848408917d6c28e03a23777f5590 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Sat, 13 Jul 2019 19:25:38 +0900
Subject: [PATCH 01/16] Fix autodoc: missing type annotation for variadic and
 keyword parameters (refs: #6574)

---
 CHANGES                    |  1 +
 sphinx/util/inspect.py     | 20 ++++++++++++++------
 tests/test_util_inspect.py |  6 +++++-
 tests/typing_test_data.py  |  5 +++++
 4 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/CHANGES b/CHANGES
index 883980a71c3..4f764848fa6 100644
--- a/CHANGES
+++ b/CHANGES
@@ -44,6 +44,7 @@ Bugs fixed
 * #5502: linkcheck: Consider HTTP 503 response as not an error
 * #6439: Make generated download links reproducible
 * #6486: UnboundLocalError is raised if broken extension installed
+* #6574: autodoc: missing type annotation for variadic and keyword parameters
 * #6498: autosummary: crashed with wrong autosummary_generate setting
 * #6507: autosummary: crashes without no autosummary_generate setting
 * #6511: LaTeX: autonumbered list can not be customized in LaTeX
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 3e403d9d183..6d7a9c84e67 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -400,6 +400,12 @@ def return_annotation(self) -> Any:
             return None
 
     def format_args(self, show_annotation: bool = True) -> str:
+        def format_param_annotation(param: inspect.Parameter) -> str:
+            if isinstance(param.annotation, str) and param.name in self.annotations:
+                return self.format_annotation(self.annotations[param.name])
+            else:
+                return self.format_annotation(param.annotation)
+
         args = []
         last_kind = None
         for i, param in enumerate(self.parameters.values()):
@@ -421,12 +427,8 @@ def format_args(self, show_annotation: bool = True) -> str:
                               param.KEYWORD_ONLY):
                 arg.write(param.name)
                 if show_annotation and param.annotation is not param.empty:
-                    if isinstance(param.annotation, str) and param.name in self.annotations:
-                        arg.write(': ')
-                        arg.write(self.format_annotation(self.annotations[param.name]))
-                    else:
-                        arg.write(': ')
-                        arg.write(self.format_annotation(param.annotation))
+                    arg.write(': ')
+                    arg.write(format_param_annotation(param))
                 if param.default is not param.empty:
                     if param.annotation is param.empty:
                         arg.write('=')
@@ -437,9 +439,15 @@ def format_args(self, show_annotation: bool = True) -> str:
             elif param.kind == param.VAR_POSITIONAL:
                 arg.write('*')
                 arg.write(param.name)
+                if show_annotation and param.annotation is not param.empty:
+                    arg.write(': ')
+                    arg.write(format_param_annotation(param))
             elif param.kind == param.VAR_KEYWORD:
                 arg.write('**')
                 arg.write(param.name)
+                if show_annotation and param.annotation is not param.empty:
+                    arg.write(': ')
+                    arg.write(format_param_annotation(param))
 
             args.append(arg.getvalue())
             last_kind = param.kind
diff --git a/tests/test_util_inspect.py b/tests/test_util_inspect.py
index 0681352e370..4972803c81c 100644
--- a/tests/test_util_inspect.py
+++ b/tests/test_util_inspect.py
@@ -195,7 +195,7 @@ def meth2(self, arg1, arg2):
 
 def test_Signature_annotations():
     from typing_test_data import (f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10,
-                                  f11, f12, f13, f14, f15, f16, f17, f18, Node)
+                                  f11, f12, f13, f14, f15, f16, f17, f18, f19, Node)
 
     # Class annotations
     sig = inspect.Signature(f0).format_args()
@@ -275,6 +275,10 @@ def test_Signature_annotations():
     sig = inspect.Signature(f18).format_args()
     assert sig == '(self, arg1: Union[int, Tuple] = 10) -> List[Dict]'
 
+    # annotations for variadic and keyword parameters
+    sig = inspect.Signature(f19).format_args()
+    assert sig == '(*args: int, **kwargs: str)'
+
     # type hints by string
     sig = inspect.Signature(Node.children).format_args()
     if (3, 5, 0) <= sys.version_info < (3, 5, 3):
diff --git a/tests/typing_test_data.py b/tests/typing_test_data.py
index e7289e80052..76db7c898c0 100644
--- a/tests/typing_test_data.py
+++ b/tests/typing_test_data.py
@@ -92,6 +92,11 @@ def f18(self, arg1: Union[int, Tuple] = 10) -> List[Dict]:
     pass
 
 
+def f19(*args: int, **kwargs: str):
+    pass
+
+
+
 class Node:
     def __init__(self, parent: Optional['Node']) -> None:
         pass

From d9d8ba5e7f521d98b486544fdd1904b8ee449615 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 29 Jul 2019 00:05:35 +0900
Subject: [PATCH 02/16] Fix #6606: Update jQuery to 3.4.1

---
 .../{jquery-3.2.1.js => jquery-3.4.1.js}      | 1339 +++++++++++------
 sphinx/themes/basic/static/jquery.js          |    6 +-
 tests/test_theming.py                         |    2 +-
 3 files changed, 845 insertions(+), 502 deletions(-)
 rename sphinx/themes/basic/static/{jquery-3.2.1.js => jquery-3.4.1.js} (89%)

diff --git a/sphinx/themes/basic/static/jquery-3.2.1.js b/sphinx/themes/basic/static/jquery-3.4.1.js
similarity index 89%
rename from sphinx/themes/basic/static/jquery-3.2.1.js
rename to sphinx/themes/basic/static/jquery-3.4.1.js
index d2d8ca4790e..773ad95c56f 100644
--- a/sphinx/themes/basic/static/jquery-3.2.1.js
+++ b/sphinx/themes/basic/static/jquery-3.4.1.js
@@ -1,5 +1,5 @@
 /*!
- * jQuery JavaScript Library v3.2.1
+ * jQuery JavaScript Library v3.4.1
  * https://jquery.com/
  *
  * Includes Sizzle.js
@@ -9,7 +9,7 @@
  * Released under the MIT license
  * https://jquery.org/license
  *
- * Date: 2017-03-20T18:59Z
+ * Date: 2019-05-01T21:04Z
  */
 ( function( global, factory ) {
 
@@ -71,16 +71,70 @@ var ObjectFunctionString = fnToString.call( Object );
 
 var support = {};
 
+var isFunction = function isFunction( obj ) {
 
+      // Support: Chrome <=57, Firefox <=52
+      // In some browsers, typeof returns "function" for HTML <object> elements
+      // (i.e., `typeof document.createElement( "object" ) === "function"`).
+      // We don't want to classify *any* DOM node as a function.
+      return typeof obj === "function" && typeof obj.nodeType !== "number";
+  };
 
-	function DOMEval( code, doc ) {
+
+var isWindow = function isWindow( obj ) {
+		return obj != null && obj === obj.window;
+	};
+
+
+
+
+	var preservedScriptAttributes = {
+		type: true,
+		src: true,
+		nonce: true,
+		noModule: true
+	};
+
+	function DOMEval( code, node, doc ) {
 		doc = doc || document;
 
-		var script = doc.createElement( "script" );
+		var i, val,
+			script = doc.createElement( "script" );
 
 		script.text = code;
+		if ( node ) {
+			for ( i in preservedScriptAttributes ) {
+
+				// Support: Firefox 64+, Edge 18+
+				// Some browsers don't support the "nonce" property on scripts.
+				// On the other hand, just using `getAttribute` is not enough as
+				// the `nonce` attribute is reset to an empty string whenever it
+				// becomes browsing-context connected.
+				// See https://github.com/whatwg/html/issues/2369
+				// See https://html.spec.whatwg.org/#nonce-attributes
+				// The `node.getAttribute` check was added for the sake of
+				// `jQuery.globalEval` so that it can fake a nonce-containing node
+				// via an object.
+				val = node[ i ] || node.getAttribute && node.getAttribute( i );
+				if ( val ) {
+					script.setAttribute( i, val );
+				}
+			}
+		}
 		doc.head.appendChild( script ).parentNode.removeChild( script );
 	}
+
+
+function toType( obj ) {
+	if ( obj == null ) {
+		return obj + "";
+	}
+
+	// Support: Android <=2.3 only (functionish RegExp)
+	return typeof obj === "object" || typeof obj === "function" ?
+		class2type[ toString.call( obj ) ] || "object" :
+		typeof obj;
+}
 /* global Symbol */
 // Defining this global in .eslintrc.json would create a danger of using the global
 // unguarded in another place, it seems safer to define global only for this module
@@ -88,7 +142,7 @@ var support = {};
 
 
 var
-	version = "3.2.1",
+	version = "3.4.1",
 
 	// Define a local copy of jQuery
 	jQuery = function( selector, context ) {
@@ -100,16 +154,7 @@ var
 
 	// Support: Android <=4.0 only
 	// Make sure we trim BOM and NBSP
-	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g,
-
-	// Matches dashed string for camelizing
-	rmsPrefix = /^-ms-/,
-	rdashAlpha = /-([a-z])/g,
-
-	// Used by jQuery.camelCase as callback to replace()
-	fcamelCase = function( all, letter ) {
-		return letter.toUpperCase();
-	};
+	rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
 
 jQuery.fn = jQuery.prototype = {
 
@@ -209,7 +254,7 @@ jQuery.extend = jQuery.fn.extend = function() {
 	}
 
 	// Handle case when target is a string or something (possible in deep copy)
-	if ( typeof target !== "object" && !jQuery.isFunction( target ) ) {
+	if ( typeof target !== "object" && !isFunction( target ) ) {
 		target = {};
 	}
 
@@ -226,25 +271,28 @@ jQuery.extend = jQuery.fn.extend = function() {
 
 			// Extend the base object
 			for ( name in options ) {
-				src = target[ name ];
 				copy = options[ name ];
 
+				// Prevent Object.prototype pollution
 				// Prevent never-ending loop
-				if ( target === copy ) {
+				if ( name === "__proto__" || target === copy ) {
 					continue;
 				}
 
 				// Recurse if we're merging plain objects or arrays
 				if ( deep && copy && ( jQuery.isPlainObject( copy ) ||
 					( copyIsArray = Array.isArray( copy ) ) ) ) {
+					src = target[ name ];
 
-					if ( copyIsArray ) {
-						copyIsArray = false;
-						clone = src && Array.isArray( src ) ? src : [];
-
+					// Ensure proper type for the source value
+					if ( copyIsArray && !Array.isArray( src ) ) {
+						clone = [];
+					} else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) {
+						clone = {};
 					} else {
-						clone = src && jQuery.isPlainObject( src ) ? src : {};
+						clone = src;
 					}
+					copyIsArray = false;
 
 					// Never move original objects, clone them
 					target[ name ] = jQuery.extend( deep, clone, copy );
@@ -275,28 +323,6 @@ jQuery.extend( {
 
 	noop: function() {},
 
-	isFunction: function( obj ) {
-		return jQuery.type( obj ) === "function";
-	},
-
-	isWindow: function( obj ) {
-		return obj != null && obj === obj.window;
-	},
-
-	isNumeric: function( obj ) {
-
-		// As of jQuery 3.0, isNumeric is limited to
-		// strings and numbers (primitives or objects)
-		// that can be coerced to finite numbers (gh-2662)
-		var type = jQuery.type( obj );
-		return ( type === "number" || type === "string" ) &&
-
-			// parseFloat NaNs numeric-cast false positives ("")
-			// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
-			// subtraction forces infinities to NaN
-			!isNaN( obj - parseFloat( obj ) );
-	},
-
 	isPlainObject: function( obj ) {
 		var proto, Ctor;
 
@@ -319,9 +345,6 @@ jQuery.extend( {
 	},
 
 	isEmptyObject: function( obj ) {
-
-		/* eslint-disable no-unused-vars */
-		// See https://github.com/eslint/eslint/issues/6125
 		var name;
 
 		for ( name in obj ) {
@@ -330,27 +353,9 @@ jQuery.extend( {
 		return true;
 	},
 
-	type: function( obj ) {
-		if ( obj == null ) {
-			return obj + "";
-		}
-
-		// Support: Android <=2.3 only (functionish RegExp)
-		return typeof obj === "object" || typeof obj === "function" ?
-			class2type[ toString.call( obj ) ] || "object" :
-			typeof obj;
-	},
-
 	// Evaluates a script in a global context
-	globalEval: function( code ) {
-		DOMEval( code );
-	},
-
-	// Convert dashed to camelCase; used by the css and data modules
-	// Support: IE <=9 - 11, Edge 12 - 13
-	// Microsoft forgot to hump their vendor prefix (#9572)
-	camelCase: function( string ) {
-		return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+	globalEval: function( code, options ) {
+		DOMEval( code, { nonce: options && options.nonce } );
 	},
 
 	each: function( obj, callback ) {
@@ -473,37 +478,6 @@ jQuery.extend( {
 	// A global GUID counter for objects
 	guid: 1,
 
-	// Bind a function to a context, optionally partially applying any
-	// arguments.
-	proxy: function( fn, context ) {
-		var tmp, args, proxy;
-
-		if ( typeof context === "string" ) {
-			tmp = fn[ context ];
-			context = fn;
-			fn = tmp;
-		}
-
-		// Quick check to determine if target is callable, in the spec
-		// this throws a TypeError, but we will just return undefined.
-		if ( !jQuery.isFunction( fn ) ) {
-			return undefined;
-		}
-
-		// Simulated bind
-		args = slice.call( arguments, 2 );
-		proxy = function() {
-			return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
-		};
-
-		// Set the guid of unique handler to the same of original handler, so it can be removed
-		proxy.guid = fn.guid = fn.guid || jQuery.guid++;
-
-		return proxy;
-	},
-
-	now: Date.now,
-
 	// jQuery.support is not used in Core but other projects attach their
 	// properties to it so it needs to exist.
 	support: support
@@ -526,9 +500,9 @@ function isArrayLike( obj ) {
 	// hasOwn isn't used here due to false negatives
 	// regarding Nodelist length in IE
 	var length = !!obj && "length" in obj && obj.length,
-		type = jQuery.type( obj );
+		type = toType( obj );
 
-	if ( type === "function" || jQuery.isWindow( obj ) ) {
+	if ( isFunction( obj ) || isWindow( obj ) ) {
 		return false;
 	}
 
@@ -537,14 +511,14 @@ function isArrayLike( obj ) {
 }
 var Sizzle =
 /*!
- * Sizzle CSS Selector Engine v2.3.3
+ * Sizzle CSS Selector Engine v2.3.4
  * https://sizzlejs.com/
  *
- * Copyright jQuery Foundation and other contributors
+ * Copyright JS Foundation and other contributors
  * Released under the MIT license
- * http://jquery.org/license
+ * https://js.foundation/
  *
- * Date: 2016-08-08
+ * Date: 2019-04-08
  */
 (function( window ) {
 
@@ -578,6 +552,7 @@ var i,
 	classCache = createCache(),
 	tokenCache = createCache(),
 	compilerCache = createCache(),
+	nonnativeSelectorCache = createCache(),
 	sortOrder = function( a, b ) {
 		if ( a === b ) {
 			hasDuplicate = true;
@@ -639,8 +614,7 @@ var i,
 
 	rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ),
 	rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*" ),
-
-	rattributeQuotes = new RegExp( "=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g" ),
+	rdescend = new RegExp( whitespace + "|>" ),
 
 	rpseudo = new RegExp( pseudos ),
 	ridentifier = new RegExp( "^" + identifier + "$" ),
@@ -661,6 +635,7 @@ var i,
 			whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" )
 	},
 
+	rhtml = /HTML$/i,
 	rinputs = /^(?:input|select|textarea|button)$/i,
 	rheader = /^h\d$/i,
 
@@ -715,9 +690,9 @@ var i,
 		setDocument();
 	},
 
-	disabledAncestor = addCombinator(
+	inDisabledFieldset = addCombinator(
 		function( elem ) {
-			return elem.disabled === true && ("form" in elem || "label" in elem);
+			return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset";
 		},
 		{ dir: "parentNode", next: "legend" }
 	);
@@ -830,18 +805,22 @@ function Sizzle( selector, context, results, seed ) {
 
 			// Take advantage of querySelectorAll
 			if ( support.qsa &&
-				!compilerCache[ selector + " " ] &&
-				(!rbuggyQSA || !rbuggyQSA.test( selector )) ) {
-
-				if ( nodeType !== 1 ) {
-					newContext = context;
-					newSelector = selector;
+				!nonnativeSelectorCache[ selector + " " ] &&
+				(!rbuggyQSA || !rbuggyQSA.test( selector )) &&
 
-				// qSA looks outside Element context, which is not what we want
-				// Thanks to Andrew Dupont for this workaround technique
-				// Support: IE <=8
+				// Support: IE 8 only
 				// Exclude object elements
-				} else if ( context.nodeName.toLowerCase() !== "object" ) {
+				(nodeType !== 1 || context.nodeName.toLowerCase() !== "object") ) {
+
+				newSelector = selector;
+				newContext = context;
+
+				// qSA considers elements outside a scoping root when evaluating child or
+				// descendant combinators, which is not what we want.
+				// In such cases, we work around the behavior by prefixing every selector in the
+				// list with an ID selector referencing the scope context.
+				// Thanks to Andrew Dupont for this technique.
+				if ( nodeType === 1 && rdescend.test( selector ) ) {
 
 					// Capture the context ID, setting it first if necessary
 					if ( (nid = context.getAttribute( "id" )) ) {
@@ -863,17 +842,16 @@ function Sizzle( selector, context, results, seed ) {
 						context;
 				}
 
-				if ( newSelector ) {
-					try {
-						push.apply( results,
-							newContext.querySelectorAll( newSelector )
-						);
-						return results;
-					} catch ( qsaError ) {
-					} finally {
-						if ( nid === expando ) {
-							context.removeAttribute( "id" );
-						}
+				try {
+					push.apply( results,
+						newContext.querySelectorAll( newSelector )
+					);
+					return results;
+				} catch ( qsaError ) {
+					nonnativeSelectorCache( selector, true );
+				} finally {
+					if ( nid === expando ) {
+						context.removeAttribute( "id" );
 					}
 				}
 			}
@@ -1037,7 +1015,7 @@ function createDisabledPseudo( disabled ) {
 					// Where there is no isDisabled, check manually
 					/* jshint -W018 */
 					elem.isDisabled !== !disabled &&
-						disabledAncestor( elem ) === disabled;
+						inDisabledFieldset( elem ) === disabled;
 			}
 
 			return elem.disabled === disabled;
@@ -1094,10 +1072,13 @@ support = Sizzle.support = {};
  * @returns {Boolean} True iff elem is a non-HTML XML node
  */
 isXML = Sizzle.isXML = function( elem ) {
-	// documentElement is verified for cases where it doesn't yet exist
-	// (such as loading iframes in IE - #4833)
-	var documentElement = elem && (elem.ownerDocument || elem).documentElement;
-	return documentElement ? documentElement.nodeName !== "HTML" : false;
+	var namespace = elem.namespaceURI,
+		docElem = (elem.ownerDocument || elem).documentElement;
+
+	// Support: IE <=8
+	// Assume HTML when documentElement doesn't yet exist, such as inside loading iframes
+	// https://bugs.jquery.com/ticket/4833
+	return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" );
 };
 
 /**
@@ -1519,11 +1500,8 @@ Sizzle.matchesSelector = function( elem, expr ) {
 		setDocument( elem );
 	}
 
-	// Make sure that attribute selectors are quoted
-	expr = expr.replace( rattributeQuotes, "='$1']" );
-
 	if ( support.matchesSelector && documentIsHTML &&
-		!compilerCache[ expr + " " ] &&
+		!nonnativeSelectorCache[ expr + " " ] &&
 		( !rbuggyMatches || !rbuggyMatches.test( expr ) ) &&
 		( !rbuggyQSA     || !rbuggyQSA.test( expr ) ) ) {
 
@@ -1537,7 +1515,9 @@ Sizzle.matchesSelector = function( elem, expr ) {
 					elem.document && elem.document.nodeType !== 11 ) {
 				return ret;
 			}
-		} catch (e) {}
+		} catch (e) {
+			nonnativeSelectorCache( expr, true );
+		}
 	}
 
 	return Sizzle( expr, document, null, [ elem ] ).length > 0;
@@ -1996,7 +1976,7 @@ Expr = Sizzle.selectors = {
 		"contains": markFunction(function( text ) {
 			text = text.replace( runescape, funescape );
 			return function( elem ) {
-				return ( elem.textContent || elem.innerText || getText( elem ) ).indexOf( text ) > -1;
+				return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1;
 			};
 		}),
 
@@ -2135,7 +2115,11 @@ Expr = Sizzle.selectors = {
 		}),
 
 		"lt": createPositionalPseudo(function( matchIndexes, length, argument ) {
-			var i = argument < 0 ? argument + length : argument;
+			var i = argument < 0 ?
+				argument + length :
+				argument > length ?
+					length :
+					argument;
 			for ( ; --i >= 0; ) {
 				matchIndexes.push( i );
 			}
@@ -2848,11 +2832,9 @@ var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|
 
 
 
-var risSimple = /^.[^:#\[\.,]*$/;
-
 // Implement the identical functionality for filter and not
 function winnow( elements, qualifier, not ) {
-	if ( jQuery.isFunction( qualifier ) ) {
+	if ( isFunction( qualifier ) ) {
 		return jQuery.grep( elements, function( elem, i ) {
 			return !!qualifier.call( elem, i, elem ) !== not;
 		} );
@@ -2872,16 +2854,8 @@ function winnow( elements, qualifier, not ) {
 		} );
 	}
 
-	// Simple selector that can be filtered directly, removing non-Elements
-	if ( risSimple.test( qualifier ) ) {
-		return jQuery.filter( qualifier, elements, not );
-	}
-
-	// Complex selector, compare the two sets, removing non-Elements
-	qualifier = jQuery.filter( qualifier, elements );
-	return jQuery.grep( elements, function( elem ) {
-		return ( indexOf.call( qualifier, elem ) > -1 ) !== not && elem.nodeType === 1;
-	} );
+	// Filtered directly for both simple and complex selectors
+	return jQuery.filter( qualifier, elements, not );
 }
 
 jQuery.filter = function( expr, elems, not ) {
@@ -3002,7 +2976,7 @@ var rootjQuery,
 						for ( match in context ) {
 
 							// Properties of context are called as methods if possible
-							if ( jQuery.isFunction( this[ match ] ) ) {
+							if ( isFunction( this[ match ] ) ) {
 								this[ match ]( context[ match ] );
 
 							// ...and otherwise set as attributes
@@ -3045,7 +3019,7 @@ var rootjQuery,
 
 		// HANDLE: $(function)
 		// Shortcut for document ready
-		} else if ( jQuery.isFunction( selector ) ) {
+		} else if ( isFunction( selector ) ) {
 			return root.ready !== undefined ?
 				root.ready( selector ) :
 
@@ -3195,18 +3169,18 @@ jQuery.each( {
 		return siblings( elem.firstChild );
 	},
 	contents: function( elem ) {
-        if ( nodeName( elem, "iframe" ) ) {
-            return elem.contentDocument;
-        }
+		if ( typeof elem.contentDocument !== "undefined" ) {
+			return elem.contentDocument;
+		}
 
-        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
-        // Treat the template element as a regular one in browsers that
-        // don't support it.
-        if ( nodeName( elem, "template" ) ) {
-            elem = elem.content || elem;
-        }
+		// Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
+		// Treat the template element as a regular one in browsers that
+		// don't support it.
+		if ( nodeName( elem, "template" ) ) {
+			elem = elem.content || elem;
+		}
 
-        return jQuery.merge( [], elem.childNodes );
+		return jQuery.merge( [], elem.childNodes );
 	}
 }, function( name, fn ) {
 	jQuery.fn[ name ] = function( until, selector ) {
@@ -3360,11 +3334,11 @@ jQuery.Callbacks = function( options ) {
 
 					( function add( args ) {
 						jQuery.each( args, function( _, arg ) {
-							if ( jQuery.isFunction( arg ) ) {
+							if ( isFunction( arg ) ) {
 								if ( !options.unique || !self.has( arg ) ) {
 									list.push( arg );
 								}
-							} else if ( arg && arg.length && jQuery.type( arg ) !== "string" ) {
+							} else if ( arg && arg.length && toType( arg ) !== "string" ) {
 
 								// Inspect recursively
 								add( arg );
@@ -3479,11 +3453,11 @@ function adoptValue( value, resolve, reject, noValue ) {
 	try {
 
 		// Check for promise aspect first to privilege synchronous behavior
-		if ( value && jQuery.isFunction( ( method = value.promise ) ) ) {
+		if ( value && isFunction( ( method = value.promise ) ) ) {
 			method.call( value ).done( resolve ).fail( reject );
 
 		// Other thenables
-		} else if ( value && jQuery.isFunction( ( method = value.then ) ) ) {
+		} else if ( value && isFunction( ( method = value.then ) ) ) {
 			method.call( value, resolve, reject );
 
 		// Other non-thenables
@@ -3541,14 +3515,14 @@ jQuery.extend( {
 						jQuery.each( tuples, function( i, tuple ) {
 
 							// Map tuples (progress, done, fail) to arguments (done, fail, progress)
-							var fn = jQuery.isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
+							var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ];
 
 							// deferred.progress(function() { bind to newDefer or newDefer.notify })
 							// deferred.done(function() { bind to newDefer or newDefer.resolve })
 							// deferred.fail(function() { bind to newDefer or newDefer.reject })
 							deferred[ tuple[ 1 ] ]( function() {
 								var returned = fn && fn.apply( this, arguments );
-								if ( returned && jQuery.isFunction( returned.promise ) ) {
+								if ( returned && isFunction( returned.promise ) ) {
 									returned.promise()
 										.progress( newDefer.notify )
 										.done( newDefer.resolve )
@@ -3602,7 +3576,7 @@ jQuery.extend( {
 										returned.then;
 
 									// Handle a returned thenable
-									if ( jQuery.isFunction( then ) ) {
+									if ( isFunction( then ) ) {
 
 										// Special processors (notify) just wait for resolution
 										if ( special ) {
@@ -3698,7 +3672,7 @@ jQuery.extend( {
 							resolve(
 								0,
 								newDefer,
-								jQuery.isFunction( onProgress ) ?
+								isFunction( onProgress ) ?
 									onProgress :
 									Identity,
 								newDefer.notifyWith
@@ -3710,7 +3684,7 @@ jQuery.extend( {
 							resolve(
 								0,
 								newDefer,
-								jQuery.isFunction( onFulfilled ) ?
+								isFunction( onFulfilled ) ?
 									onFulfilled :
 									Identity
 							)
@@ -3721,7 +3695,7 @@ jQuery.extend( {
 							resolve(
 								0,
 								newDefer,
-								jQuery.isFunction( onRejected ) ?
+								isFunction( onRejected ) ?
 									onRejected :
 									Thrower
 							)
@@ -3761,8 +3735,15 @@ jQuery.extend( {
 					// fulfilled_callbacks.disable
 					tuples[ 3 - i ][ 2 ].disable,
 
+					// rejected_handlers.disable
+					// fulfilled_handlers.disable
+					tuples[ 3 - i ][ 3 ].disable,
+
 					// progress_callbacks.lock
-					tuples[ 0 ][ 2 ].lock
+					tuples[ 0 ][ 2 ].lock,
+
+					// progress_handlers.lock
+					tuples[ 0 ][ 3 ].lock
 				);
 			}
 
@@ -3832,7 +3813,7 @@ jQuery.extend( {
 
 			// Use .then() to unwrap secondary thenables (cf. gh-3000)
 			if ( master.state() === "pending" ||
-				jQuery.isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
+				isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) {
 
 				return master.then();
 			}
@@ -3960,7 +3941,7 @@ var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 		bulk = key == null;
 
 	// Sets many values
-	if ( jQuery.type( key ) === "object" ) {
+	if ( toType( key ) === "object" ) {
 		chainable = true;
 		for ( i in key ) {
 			access( elems, fn, i, key[ i ], true, emptyGet, raw );
@@ -3970,7 +3951,7 @@ var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 	} else if ( value !== undefined ) {
 		chainable = true;
 
-		if ( !jQuery.isFunction( value ) ) {
+		if ( !isFunction( value ) ) {
 			raw = true;
 		}
 
@@ -4012,6 +3993,23 @@ var access = function( elems, fn, key, value, chainable, emptyGet, raw ) {
 
 	return len ? fn( elems[ 0 ], key ) : emptyGet;
 };
+
+
+// Matches dashed string for camelizing
+var rmsPrefix = /^-ms-/,
+	rdashAlpha = /-([a-z])/g;
+
+// Used by camelCase as callback to replace()
+function fcamelCase( all, letter ) {
+	return letter.toUpperCase();
+}
+
+// Convert dashed to camelCase; used by the css and data modules
+// Support: IE <=9 - 11, Edge 12 - 15
+// Microsoft forgot to hump their vendor prefix (#9572)
+function camelCase( string ) {
+	return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase );
+}
 var acceptData = function( owner ) {
 
 	// Accepts only:
@@ -4074,14 +4072,14 @@ Data.prototype = {
 		// Handle: [ owner, key, value ] args
 		// Always use camelCase key (gh-2257)
 		if ( typeof data === "string" ) {
-			cache[ jQuery.camelCase( data ) ] = value;
+			cache[ camelCase( data ) ] = value;
 
 		// Handle: [ owner, { properties } ] args
 		} else {
 
 			// Copy the properties one-by-one to the cache object
 			for ( prop in data ) {
-				cache[ jQuery.camelCase( prop ) ] = data[ prop ];
+				cache[ camelCase( prop ) ] = data[ prop ];
 			}
 		}
 		return cache;
@@ -4091,7 +4089,7 @@ Data.prototype = {
 			this.cache( owner ) :
 
 			// Always use camelCase key (gh-2257)
-			owner[ this.expando ] && owner[ this.expando ][ jQuery.camelCase( key ) ];
+			owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ];
 	},
 	access: function( owner, key, value ) {
 
@@ -4139,9 +4137,9 @@ Data.prototype = {
 
 				// If key is an array of keys...
 				// We always set camelCase keys, so remove that.
-				key = key.map( jQuery.camelCase );
+				key = key.map( camelCase );
 			} else {
-				key = jQuery.camelCase( key );
+				key = camelCase( key );
 
 				// If a key with the spaces exists, use it.
 				// Otherwise, create an array by matching non-whitespace
@@ -4287,7 +4285,7 @@ jQuery.fn.extend( {
 						if ( attrs[ i ] ) {
 							name = attrs[ i ].name;
 							if ( name.indexOf( "data-" ) === 0 ) {
-								name = jQuery.camelCase( name.slice( 5 ) );
+								name = camelCase( name.slice( 5 ) );
 								dataAttr( elem, name, data[ name ] );
 							}
 						}
@@ -4491,6 +4489,26 @@ var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" );
 
 var cssExpand = [ "Top", "Right", "Bottom", "Left" ];
 
+var documentElement = document.documentElement;
+
+
+
+	var isAttached = function( elem ) {
+			return jQuery.contains( elem.ownerDocument, elem );
+		},
+		composed = { composed: true };
+
+	// Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only
+	// Check attachment across shadow DOM boundaries when possible (gh-3504)
+	// Support: iOS 10.0-10.2 only
+	// Early iOS 10 versions support `attachShadow` but not `getRootNode`,
+	// leading to errors. We need to check for `getRootNode`.
+	if ( documentElement.getRootNode ) {
+		isAttached = function( elem ) {
+			return jQuery.contains( elem.ownerDocument, elem ) ||
+				elem.getRootNode( composed ) === elem.ownerDocument;
+		};
+	}
 var isHiddenWithinTree = function( elem, el ) {
 
 		// isHiddenWithinTree might be called from jQuery#filter function;
@@ -4505,7 +4523,7 @@ var isHiddenWithinTree = function( elem, el ) {
 			// Support: Firefox <=43 - 45
 			// Disconnected elements can have computed display: none, so first confirm that elem is
 			// in the document.
-			jQuery.contains( elem.ownerDocument, elem ) &&
+			isAttached( elem ) &&
 
 			jQuery.css( elem, "display" ) === "none";
 	};
@@ -4534,8 +4552,7 @@ var swap = function( elem, options, callback, args ) {
 
 
 function adjustCSS( elem, prop, valueParts, tween ) {
-	var adjusted,
-		scale = 1,
+	var adjusted, scale,
 		maxIterations = 20,
 		currentValue = tween ?
 			function() {
@@ -4548,35 +4565,39 @@ function adjustCSS( elem, prop, valueParts, tween ) {
 		unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ),
 
 		// Starting value computation is required for potential unit mismatches
-		initialInUnit = ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
+		initialInUnit = elem.nodeType &&
+			( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) &&
 			rcssNum.exec( jQuery.css( elem, prop ) );
 
 	if ( initialInUnit && initialInUnit[ 3 ] !== unit ) {
 
+		// Support: Firefox <=54
+		// Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
+		initial = initial / 2;
+
 		// Trust units reported by jQuery.css
 		unit = unit || initialInUnit[ 3 ];
 
-		// Make sure we update the tween properties later on
-		valueParts = valueParts || [];
-
 		// Iteratively approximate from a nonzero starting point
 		initialInUnit = +initial || 1;
 
-		do {
-
-			// If previous iteration zeroed out, double until we get *something*.
-			// Use string for doubling so we don't accidentally see scale as unchanged below
-			scale = scale || ".5";
+		while ( maxIterations-- ) {
 
-			// Adjust and apply
-			initialInUnit = initialInUnit / scale;
+			// Evaluate and update our best guess (doubling guesses that zero out).
+			// Finish if the scale equals or crosses 1 (making the old*new product non-positive).
 			jQuery.style( elem, prop, initialInUnit + unit );
+			if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) {
+				maxIterations = 0;
+			}
+			initialInUnit = initialInUnit / scale;
 
-		// Update scale, tolerating zero or NaN from tween.cur()
-		// Break the loop if scale is unchanged or perfect, or if we've just had enough.
-		} while (
-			scale !== ( scale = currentValue() / initial ) && scale !== 1 && --maxIterations
-		);
+		}
+
+		initialInUnit = initialInUnit * 2;
+		jQuery.style( elem, prop, initialInUnit + unit );
+
+		// Make sure we update the tween properties later on
+		valueParts = valueParts || [];
 	}
 
 	if ( valueParts ) {
@@ -4692,9 +4713,9 @@ jQuery.fn.extend( {
 } );
 var rcheckableType = ( /^(?:checkbox|radio)$/i );
 
-var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]+)/i );
+var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i );
 
-var rscriptType = ( /^$|\/(?:java|ecma)script/i );
+var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i );
 
 
 
@@ -4764,7 +4785,7 @@ function setGlobalEval( elems, refElements ) {
 var rhtml = /<|&#?\w+;/;
 
 function buildFragment( elems, context, scripts, selection, ignored ) {
-	var elem, tmp, tag, wrap, contains, j,
+	var elem, tmp, tag, wrap, attached, j,
 		fragment = context.createDocumentFragment(),
 		nodes = [],
 		i = 0,
@@ -4776,7 +4797,7 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 		if ( elem || elem === 0 ) {
 
 			// Add nodes directly
-			if ( jQuery.type( elem ) === "object" ) {
+			if ( toType( elem ) === "object" ) {
 
 				// Support: Android <=4.0 only, PhantomJS 1 only
 				// push.apply(_, arraylike) throws on ancient WebKit
@@ -4828,13 +4849,13 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 			continue;
 		}
 
-		contains = jQuery.contains( elem.ownerDocument, elem );
+		attached = isAttached( elem );
 
 		// Append to fragment
 		tmp = getAll( fragment.appendChild( elem ), "script" );
 
 		// Preserve script evaluation history
-		if ( contains ) {
+		if ( attached ) {
 			setGlobalEval( tmp );
 		}
 
@@ -4877,8 +4898,6 @@ function buildFragment( elems, context, scripts, selection, ignored ) {
 	div.innerHTML = "<textarea>x</textarea>";
 	support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue;
 } )();
-var documentElement = document.documentElement;
-
 
 
 var
@@ -4894,8 +4913,19 @@ function returnFalse() {
 	return false;
 }
 
+// Support: IE <=9 - 11+
+// focus() and blur() are asynchronous, except when they are no-op.
+// So expect focus to be synchronous when the element is already active,
+// and blur to be synchronous when the element is not already active.
+// (focus and blur are always synchronous in other supported browsers,
+// this just defines when we can count on it).
+function expectSync( elem, type ) {
+	return ( elem === safeActiveElement() ) === ( type === "focus" );
+}
+
 // Support: IE <=9 only
-// See #13393 for more info
+// Accessing document.activeElement can throw unexpectedly
+// https://bugs.jquery.com/ticket/13393
 function safeActiveElement() {
 	try {
 		return document.activeElement;
@@ -5195,9 +5225,10 @@ jQuery.event = {
 			while ( ( handleObj = matched.handlers[ j++ ] ) &&
 				!event.isImmediatePropagationStopped() ) {
 
-				// Triggered event must either 1) have no namespace, or 2) have namespace(s)
-				// a subset or equal to those in the bound event (both can have no namespace).
-				if ( !event.rnamespace || event.rnamespace.test( handleObj.namespace ) ) {
+				// If the event is namespaced, then each handler is only invoked if it is
+				// specially universal or its namespaces are a superset of the event's.
+				if ( !event.rnamespace || handleObj.namespace === false ||
+					event.rnamespace.test( handleObj.namespace ) ) {
 
 					event.handleObj = handleObj;
 					event.data = handleObj.data;
@@ -5286,7 +5317,7 @@ jQuery.event = {
 			enumerable: true,
 			configurable: true,
 
-			get: jQuery.isFunction( hook ) ?
+			get: isFunction( hook ) ?
 				function() {
 					if ( this.originalEvent ) {
 							return hook( this.originalEvent );
@@ -5321,39 +5352,51 @@ jQuery.event = {
 			// Prevent triggered image.load events from bubbling to window.load
 			noBubble: true
 		},
-		focus: {
+		click: {
 
-			// Fire native event if possible so blur/focus sequence is correct
-			trigger: function() {
-				if ( this !== safeActiveElement() && this.focus ) {
-					this.focus();
-					return false;
-				}
-			},
-			delegateType: "focusin"
-		},
-		blur: {
-			trigger: function() {
-				if ( this === safeActiveElement() && this.blur ) {
-					this.blur();
-					return false;
+			// Utilize native event to ensure correct state for checkable inputs
+			setup: function( data ) {
+
+				// For mutual compressibility with _default, replace `this` access with a local var.
+				// `|| data` is dead code meant only to preserve the variable through minification.
+				var el = this || data;
+
+				// Claim the first handler
+				if ( rcheckableType.test( el.type ) &&
+					el.click && nodeName( el, "input" ) ) {
+
+					// dataPriv.set( el, "click", ... )
+					leverageNative( el, "click", returnTrue );
 				}
+
+				// Return false to allow normal processing in the caller
+				return false;
 			},
-			delegateType: "focusout"
-		},
-		click: {
+			trigger: function( data ) {
 
-			// For checkbox, fire native event so checked state will be right
-			trigger: function() {
-				if ( this.type === "checkbox" && this.click && nodeName( this, "input" ) ) {
-					this.click();
-					return false;
+				// For mutual compressibility with _default, replace `this` access with a local var.
+				// `|| data` is dead code meant only to preserve the variable through minification.
+				var el = this || data;
+
+				// Force setup before triggering a click
+				if ( rcheckableType.test( el.type ) &&
+					el.click && nodeName( el, "input" ) ) {
+
+					leverageNative( el, "click" );
 				}
+
+				// Return non-false to allow normal event-path propagation
+				return true;
 			},
 
-			// For cross-browser consistency, don't fire native .click() on links
+			// For cross-browser consistency, suppress native .click() on links
+			// Also prevent it if we're currently inside a leveraged native-event stack
 			_default: function( event ) {
-				return nodeName( event.target, "a" );
+				var target = event.target;
+				return rcheckableType.test( target.type ) &&
+					target.click && nodeName( target, "input" ) &&
+					dataPriv.get( target, "click" ) ||
+					nodeName( target, "a" );
 			}
 		},
 
@@ -5370,6 +5413,93 @@ jQuery.event = {
 	}
 };
 
+// Ensure the presence of an event listener that handles manually-triggered
+// synthetic events by interrupting progress until reinvoked in response to
+// *native* events that it fires directly, ensuring that state changes have
+// already occurred before other listeners are invoked.
+function leverageNative( el, type, expectSync ) {
+
+	// Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add
+	if ( !expectSync ) {
+		if ( dataPriv.get( el, type ) === undefined ) {
+			jQuery.event.add( el, type, returnTrue );
+		}
+		return;
+	}
+
+	// Register the controller as a special universal handler for all event namespaces
+	dataPriv.set( el, type, false );
+	jQuery.event.add( el, type, {
+		namespace: false,
+		handler: function( event ) {
+			var notAsync, result,
+				saved = dataPriv.get( this, type );
+
+			if ( ( event.isTrigger & 1 ) && this[ type ] ) {
+
+				// Interrupt processing of the outer synthetic .trigger()ed event
+				// Saved data should be false in such cases, but might be a leftover capture object
+				// from an async native handler (gh-4350)
+				if ( !saved.length ) {
+
+					// Store arguments for use when handling the inner native event
+					// There will always be at least one argument (an event object), so this array
+					// will not be confused with a leftover capture object.
+					saved = slice.call( arguments );
+					dataPriv.set( this, type, saved );
+
+					// Trigger the native event and capture its result
+					// Support: IE <=9 - 11+
+					// focus() and blur() are asynchronous
+					notAsync = expectSync( this, type );
+					this[ type ]();
+					result = dataPriv.get( this, type );
+					if ( saved !== result || notAsync ) {
+						dataPriv.set( this, type, false );
+					} else {
+						result = {};
+					}
+					if ( saved !== result ) {
+
+						// Cancel the outer synthetic event
+						event.stopImmediatePropagation();
+						event.preventDefault();
+						return result.value;
+					}
+
+				// If this is an inner synthetic event for an event with a bubbling surrogate
+				// (focus or blur), assume that the surrogate already propagated from triggering the
+				// native event and prevent that from happening again here.
+				// This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the
+				// bubbling surrogate propagates *after* the non-bubbling base), but that seems
+				// less bad than duplication.
+				} else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) {
+					event.stopPropagation();
+				}
+
+			// If this is a native event triggered above, everything is now in order
+			// Fire an inner synthetic event with the original arguments
+			} else if ( saved.length ) {
+
+				// ...and capture the result
+				dataPriv.set( this, type, {
+					value: jQuery.event.trigger(
+
+						// Support: IE <=9 - 11+
+						// Extend with the prototype to reset the above stopImmediatePropagation()
+						jQuery.extend( saved[ 0 ], jQuery.Event.prototype ),
+						saved.slice( 1 ),
+						this
+					)
+				} );
+
+				// Abort handling of the native event
+				event.stopImmediatePropagation();
+			}
+		}
+	} );
+}
+
 jQuery.removeEvent = function( elem, type, handle ) {
 
 	// This "if" is needed for plain objects
@@ -5421,7 +5551,7 @@ jQuery.Event = function( src, props ) {
 	}
 
 	// Create a timestamp if incoming event doesn't have one
-	this.timeStamp = src && src.timeStamp || jQuery.now();
+	this.timeStamp = src && src.timeStamp || Date.now();
 
 	// Mark it as fixed
 	this[ jQuery.expando ] = true;
@@ -5482,6 +5612,7 @@ jQuery.each( {
 	shiftKey: true,
 	view: true,
 	"char": true,
+	code: true,
 	charCode: true,
 	key: true,
 	keyCode: true,
@@ -5528,6 +5659,33 @@ jQuery.each( {
 	}
 }, jQuery.event.addProp );
 
+jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) {
+	jQuery.event.special[ type ] = {
+
+		// Utilize native event if possible so blur/focus sequence is correct
+		setup: function() {
+
+			// Claim the first handler
+			// dataPriv.set( this, "focus", ... )
+			// dataPriv.set( this, "blur", ... )
+			leverageNative( this, type, expectSync );
+
+			// Return false to allow normal processing in the caller
+			return false;
+		},
+		trigger: function() {
+
+			// Force setup before trigger
+			leverageNative( this, type );
+
+			// Return non-false to allow normal event-path propagation
+			return true;
+		},
+
+		delegateType: delegateType
+	};
+} );
+
 // Create mouseenter/leave events using mouseover/out and event-time checks
 // so that event delegation works in jQuery.
 // Do the same for pointerenter/pointerleave and pointerover/pointerout
@@ -5620,14 +5778,13 @@ var
 
 	/* eslint-enable */
 
-	// Support: IE <=10 - 11, Edge 12 - 13
+	// Support: IE <=10 - 11, Edge 12 - 13 only
 	// In IE/Edge using regex groups here causes severe slowdowns.
 	// See https://connect.microsoft.com/IE/feedback/details/1736512/
 	rnoInnerhtml = /<script|<style|<link/i,
 
 	// checked="checked" or checked
 	rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
-	rscriptTypeMasked = /^true\/(.*)/,
 	rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
 
 // Prefer a tbody over its parent table for containing new rows
@@ -5635,7 +5792,7 @@ function manipulationTarget( elem, content ) {
 	if ( nodeName( elem, "table" ) &&
 		nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) {
 
-		return jQuery( ">tbody", elem )[ 0 ] || elem;
+		return jQuery( elem ).children( "tbody" )[ 0 ] || elem;
 	}
 
 	return elem;
@@ -5647,10 +5804,8 @@ function disableScript( elem ) {
 	return elem;
 }
 function restoreScript( elem ) {
-	var match = rscriptTypeMasked.exec( elem.type );
-
-	if ( match ) {
-		elem.type = match[ 1 ];
+	if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) {
+		elem.type = elem.type.slice( 5 );
 	} else {
 		elem.removeAttribute( "type" );
 	}
@@ -5716,15 +5871,15 @@ function domManip( collection, args, callback, ignored ) {
 		l = collection.length,
 		iNoClone = l - 1,
 		value = args[ 0 ],
-		isFunction = jQuery.isFunction( value );
+		valueIsFunction = isFunction( value );
 
 	// We can't cloneNode fragments that contain checked, in WebKit
-	if ( isFunction ||
+	if ( valueIsFunction ||
 			( l > 1 && typeof value === "string" &&
 				!support.checkClone && rchecked.test( value ) ) ) {
 		return collection.each( function( index ) {
 			var self = collection.eq( index );
-			if ( isFunction ) {
+			if ( valueIsFunction ) {
 				args[ 0 ] = value.call( this, index, self.html() );
 			}
 			domManip( self, args, callback, ignored );
@@ -5778,14 +5933,16 @@ function domManip( collection, args, callback, ignored ) {
 						!dataPriv.access( node, "globalEval" ) &&
 						jQuery.contains( doc, node ) ) {
 
-						if ( node.src ) {
+						if ( node.src && ( node.type || "" ).toLowerCase()  !== "module" ) {
 
 							// Optional AJAX dependency, but won't run scripts if not present
-							if ( jQuery._evalUrl ) {
-								jQuery._evalUrl( node.src );
+							if ( jQuery._evalUrl && !node.noModule ) {
+								jQuery._evalUrl( node.src, {
+									nonce: node.nonce || node.getAttribute( "nonce" )
+								} );
 							}
 						} else {
-							DOMEval( node.textContent.replace( rcleanScript, "" ), doc );
+							DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc );
 						}
 					}
 				}
@@ -5807,7 +5964,7 @@ function remove( elem, selector, keepData ) {
 		}
 
 		if ( node.parentNode ) {
-			if ( keepData && jQuery.contains( node.ownerDocument, node ) ) {
+			if ( keepData && isAttached( node ) ) {
 				setGlobalEval( getAll( node, "script" ) );
 			}
 			node.parentNode.removeChild( node );
@@ -5825,7 +5982,7 @@ jQuery.extend( {
 	clone: function( elem, dataAndEvents, deepDataAndEvents ) {
 		var i, l, srcElements, destElements,
 			clone = elem.cloneNode( true ),
-			inPage = jQuery.contains( elem.ownerDocument, elem );
+			inPage = isAttached( elem );
 
 		// Fix IE cloning issues
 		if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) &&
@@ -6065,8 +6222,6 @@ jQuery.each( {
 		return this.pushStack( ret );
 	};
 } );
-var rmargin = ( /^margin/ );
-
 var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" );
 
 var getStyles = function( elem ) {
@@ -6083,6 +6238,8 @@ var getStyles = function( elem ) {
 		return view.getComputedStyle( elem );
 	};
 
+var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" );
+
 
 
 ( function() {
@@ -6096,25 +6253,35 @@ var getStyles = function( elem ) {
 			return;
 		}
 
+		container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
+			"margin-top:1px;padding:0;border:0";
 		div.style.cssText =
-			"box-sizing:border-box;" +
-			"position:relative;display:block;" +
+			"position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
 			"margin:auto;border:1px;padding:1px;" +
-			"top:1%;width:50%";
-		div.innerHTML = "";
-		documentElement.appendChild( container );
+			"width:60%;top:1%";
+		documentElement.appendChild( container ).appendChild( div );
 
 		var divStyle = window.getComputedStyle( div );
 		pixelPositionVal = divStyle.top !== "1%";
 
 		// Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
-		reliableMarginLeftVal = divStyle.marginLeft === "2px";
-		boxSizingReliableVal = divStyle.width === "4px";
+		reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12;
 
-		// Support: Android 4.0 - 4.3 only
+		// Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
 		// Some styles come back with percentage values, even though they shouldn't
-		div.style.marginRight = "50%";
-		pixelMarginRightVal = divStyle.marginRight === "4px";
+		div.style.right = "60%";
+		pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36;
+
+		// Support: IE 9 - 11 only
+		// Detect misreporting of content dimensions for box-sizing:border-box elements
+		boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36;
+
+		// Support: IE 9 only
+		// Detect overflow:scroll screwiness (gh-3699)
+		// Support: Chrome <=64
+		// Don't get tricked when zoom affects offsetWidth (gh-4029)
+		div.style.position = "absolute";
+		scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12;
 
 		documentElement.removeChild( container );
 
@@ -6123,7 +6290,12 @@ var getStyles = function( elem ) {
 		div = null;
 	}
 
-	var pixelPositionVal, boxSizingReliableVal, pixelMarginRightVal, reliableMarginLeftVal,
+	function roundPixelMeasures( measure ) {
+		return Math.round( parseFloat( measure ) );
+	}
+
+	var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
+		reliableMarginLeftVal,
 		container = document.createElement( "div" ),
 		div = document.createElement( "div" );
 
@@ -6138,26 +6310,26 @@ var getStyles = function( elem ) {
 	div.cloneNode( true ).style.backgroundClip = "";
 	support.clearCloneStyle = div.style.backgroundClip === "content-box";
 
-	container.style.cssText = "border:0;width:8px;height:0;top:0;left:-9999px;" +
-		"padding:0;margin-top:1px;position:absolute";
-	container.appendChild( div );
-
 	jQuery.extend( support, {
-		pixelPosition: function() {
-			computeStyleTests();
-			return pixelPositionVal;
-		},
 		boxSizingReliable: function() {
 			computeStyleTests();
 			return boxSizingReliableVal;
 		},
-		pixelMarginRight: function() {
+		pixelBoxStyles: function() {
+			computeStyleTests();
+			return pixelBoxStylesVal;
+		},
+		pixelPosition: function() {
 			computeStyleTests();
-			return pixelMarginRightVal;
+			return pixelPositionVal;
 		},
 		reliableMarginLeft: function() {
 			computeStyleTests();
 			return reliableMarginLeftVal;
+		},
+		scrollboxSize: function() {
+			computeStyleTests();
+			return scrollboxSizeVal;
 		}
 	} );
 } )();
@@ -6180,7 +6352,7 @@ function curCSS( elem, name, computed ) {
 	if ( computed ) {
 		ret = computed.getPropertyValue( name ) || computed[ name ];
 
-		if ( ret === "" && !jQuery.contains( elem.ownerDocument, elem ) ) {
+		if ( ret === "" && !isAttached( elem ) ) {
 			ret = jQuery.style( elem, name );
 		}
 
@@ -6189,7 +6361,7 @@ function curCSS( elem, name, computed ) {
 		// but width seems to be reliably pixels.
 		// This is against the CSSOM draft spec:
 		// https://drafts.csswg.org/cssom/#resolved-values
-		if ( !support.pixelMarginRight() && rnumnonpx.test( ret ) && rmargin.test( name ) ) {
+		if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) {
 
 			// Remember the original values
 			width = style.width;
@@ -6236,30 +6408,13 @@ function addGetHookIf( conditionFn, hookFn ) {
 }
 
 
-var
+var cssPrefixes = [ "Webkit", "Moz", "ms" ],
+	emptyStyle = document.createElement( "div" ).style,
+	vendorProps = {};
 
-	// Swappable if display is none or starts with table
-	// except "table", "table-cell", or "table-caption"
-	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
-	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
-	rcustomProp = /^--/,
-	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
-	cssNormalTransform = {
-		letterSpacing: "0",
-		fontWeight: "400"
-	},
-
-	cssPrefixes = [ "Webkit", "Moz", "ms" ],
-	emptyStyle = document.createElement( "div" ).style;
-
-// Return a css property mapped to a potentially vendor prefixed property
+// Return a vendor-prefixed property or undefined
 function vendorPropName( name ) {
 
-	// Shortcut for names that are not vendor prefixed
-	if ( name in emptyStyle ) {
-		return name;
-	}
-
 	// Check for vendor prefixed names
 	var capName = name[ 0 ].toUpperCase() + name.slice( 1 ),
 		i = cssPrefixes.length;
@@ -6272,16 +6427,33 @@ function vendorPropName( name ) {
 	}
 }
 
-// Return a property mapped along what jQuery.cssProps suggests or to
-// a vendor prefixed property.
+// Return a potentially-mapped jQuery.cssProps or vendor prefixed property
 function finalPropName( name ) {
-	var ret = jQuery.cssProps[ name ];
-	if ( !ret ) {
-		ret = jQuery.cssProps[ name ] = vendorPropName( name ) || name;
+	var final = jQuery.cssProps[ name ] || vendorProps[ name ];
+
+	if ( final ) {
+		return final;
 	}
-	return ret;
+	if ( name in emptyStyle ) {
+		return name;
+	}
+	return vendorProps[ name ] = vendorPropName( name ) || name;
 }
 
+
+var
+
+	// Swappable if display is none or starts with table
+	// except "table", "table-cell", or "table-caption"
+	// See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+	rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+	rcustomProp = /^--/,
+	cssShow = { position: "absolute", visibility: "hidden", display: "block" },
+	cssNormalTransform = {
+		letterSpacing: "0",
+		fontWeight: "400"
+	};
+
 function setPositiveNumber( elem, value, subtract ) {
 
 	// Any relative (+/-) values have already been
@@ -6294,87 +6466,137 @@ function setPositiveNumber( elem, value, subtract ) {
 		value;
 }
 
-function augmentWidthOrHeight( elem, name, extra, isBorderBox, styles ) {
-	var i,
-		val = 0;
-
-	// If we already have the right measurement, avoid augmentation
-	if ( extra === ( isBorderBox ? "border" : "content" ) ) {
-		i = 4;
+function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) {
+	var i = dimension === "width" ? 1 : 0,
+		extra = 0,
+		delta = 0;
 
-	// Otherwise initialize for horizontal or vertical properties
-	} else {
-		i = name === "width" ? 1 : 0;
+	// Adjustment may not be necessary
+	if ( box === ( isBorderBox ? "border" : "content" ) ) {
+		return 0;
 	}
 
 	for ( ; i < 4; i += 2 ) {
 
-		// Both box models exclude margin, so add it if we want it
-		if ( extra === "margin" ) {
-			val += jQuery.css( elem, extra + cssExpand[ i ], true, styles );
+		// Both box models exclude margin
+		if ( box === "margin" ) {
+			delta += jQuery.css( elem, box + cssExpand[ i ], true, styles );
 		}
 
-		if ( isBorderBox ) {
+		// If we get here with a content-box, we're seeking "padding" or "border" or "margin"
+		if ( !isBorderBox ) {
 
-			// border-box includes padding, so remove it if we want content
-			if ( extra === "content" ) {
-				val -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
-			}
+			// Add padding
+			delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+
+			// For "border" or "margin", add border
+			if ( box !== "padding" ) {
+				delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
 
-			// At this point, extra isn't border nor margin, so remove border
-			if ( extra !== "margin" ) {
-				val -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			// But still keep track of it otherwise
+			} else {
+				extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
 			}
+
+		// If we get here with a border-box (content + padding + border), we're seeking "content" or
+		// "padding" or "margin"
 		} else {
 
-			// At this point, extra isn't content, so add padding
-			val += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+			// For "content", subtract padding
+			if ( box === "content" ) {
+				delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles );
+			}
 
-			// At this point, extra isn't content nor padding, so add border
-			if ( extra !== "padding" ) {
-				val += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
+			// For "content" or "padding", subtract border
+			if ( box !== "margin" ) {
+				delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles );
 			}
 		}
 	}
 
-	return val;
+	// Account for positive content-box scroll gutter when requested by providing computedVal
+	if ( !isBorderBox && computedVal >= 0 ) {
+
+		// offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
+		// Assuming integer scroll gutter, subtract the rest and round down
+		delta += Math.max( 0, Math.ceil(
+			elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
+			computedVal -
+			delta -
+			extra -
+			0.5
+
+		// If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter
+		// Use an explicit zero to avoid NaN (gh-3964)
+		) ) || 0;
+	}
+
+	return delta;
 }
 
-function getWidthOrHeight( elem, name, extra ) {
+function getWidthOrHeight( elem, dimension, extra ) {
 
 	// Start with computed style
-	var valueIsBorderBox,
-		styles = getStyles( elem ),
-		val = curCSS( elem, name, styles ),
-		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+	var styles = getStyles( elem ),
+
+		// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322).
+		// Fake content-box until we know it's needed to know the true value.
+		boxSizingNeeded = !support.boxSizingReliable() || extra,
+		isBorderBox = boxSizingNeeded &&
+			jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
+		valueIsBorderBox = isBorderBox,
+
+		val = curCSS( elem, dimension, styles ),
+		offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 );
 
-	// Computed unit is not pixels. Stop here and return.
+	// Support: Firefox <=54
+	// Return a confounding non-pixel value or feign ignorance, as appropriate.
 	if ( rnumnonpx.test( val ) ) {
-		return val;
+		if ( !extra ) {
+			return val;
+		}
+		val = "auto";
 	}
 
-	// Check for style in case a browser which returns unreliable values
-	// for getComputedStyle silently falls back to the reliable elem.style
-	valueIsBorderBox = isBorderBox &&
-		( support.boxSizingReliable() || val === elem.style[ name ] );
 
-	// Fall back to offsetWidth/Height when value is "auto"
+	// Fall back to offsetWidth/offsetHeight when value is "auto"
 	// This happens for inline elements with no explicit setting (gh-3571)
-	if ( val === "auto" ) {
-		val = elem[ "offset" + name[ 0 ].toUpperCase() + name.slice( 1 ) ];
+	// Support: Android <=4.1 - 4.3 only
+	// Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
+	// Support: IE 9-11 only
+	// Also use offsetWidth/offsetHeight for when box sizing is unreliable
+	// We use getClientRects() to check for hidden/disconnected.
+	// In those cases, the computed value can be trusted to be border-box
+	if ( ( !support.boxSizingReliable() && isBorderBox ||
+		val === "auto" ||
+		!parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) &&
+		elem.getClientRects().length ) {
+
+		isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box";
+
+		// Where available, offsetWidth/offsetHeight approximate border box dimensions.
+		// Where not available (e.g., SVG), assume unreliable box-sizing and interpret the
+		// retrieved value as a content box dimension.
+		valueIsBorderBox = offsetProp in elem;
+		if ( valueIsBorderBox ) {
+			val = elem[ offsetProp ];
+		}
 	}
 
-	// Normalize "", auto, and prepare for extra
+	// Normalize "" and auto
 	val = parseFloat( val ) || 0;
 
-	// Use the active box-sizing model to add/subtract irrelevant styles
+	// Adjust for the element's box model
 	return ( val +
-		augmentWidthOrHeight(
+		boxModelAdjustment(
 			elem,
-			name,
+			dimension,
 			extra || ( isBorderBox ? "border" : "content" ),
 			valueIsBorderBox,
-			styles
+			styles,
+
+			// Provide the current computed size to request scroll gutter calculation (gh-3589)
+			val
 		)
 	) + "px";
 }
@@ -6404,6 +6626,13 @@ jQuery.extend( {
 		"flexGrow": true,
 		"flexShrink": true,
 		"fontWeight": true,
+		"gridArea": true,
+		"gridColumn": true,
+		"gridColumnEnd": true,
+		"gridColumnStart": true,
+		"gridRow": true,
+		"gridRowEnd": true,
+		"gridRowStart": true,
 		"lineHeight": true,
 		"opacity": true,
 		"order": true,
@@ -6415,9 +6644,7 @@ jQuery.extend( {
 
 	// Add in properties whose names you wish to fix before
 	// setting or getting the value
-	cssProps: {
-		"float": "cssFloat"
-	},
+	cssProps: {},
 
 	// Get and set the style property on a DOM Node
 	style: function( elem, name, value, extra ) {
@@ -6429,7 +6656,7 @@ jQuery.extend( {
 
 		// Make sure that we're working with the right name
 		var ret, type, hooks,
-			origName = jQuery.camelCase( name ),
+			origName = camelCase( name ),
 			isCustomProp = rcustomProp.test( name ),
 			style = elem.style;
 
@@ -6461,7 +6688,9 @@ jQuery.extend( {
 			}
 
 			// If a number was passed in, add the unit (except for certain CSS properties)
-			if ( type === "number" ) {
+			// The isCustomProp check can be removed in jQuery 4.0 when we only auto-append
+			// "px" to a few hardcoded values.
+			if ( type === "number" && !isCustomProp ) {
 				value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" );
 			}
 
@@ -6497,7 +6726,7 @@ jQuery.extend( {
 
 	css: function( elem, name, extra, styles ) {
 		var val, num, hooks,
-			origName = jQuery.camelCase( name ),
+			origName = camelCase( name ),
 			isCustomProp = rcustomProp.test( name );
 
 		// Make sure that we're working with the right name. We don't
@@ -6535,8 +6764,8 @@ jQuery.extend( {
 	}
 } );
 
-jQuery.each( [ "height", "width" ], function( i, name ) {
-	jQuery.cssHooks[ name ] = {
+jQuery.each( [ "height", "width" ], function( i, dimension ) {
+	jQuery.cssHooks[ dimension ] = {
 		get: function( elem, computed, extra ) {
 			if ( computed ) {
 
@@ -6552,29 +6781,52 @@ jQuery.each( [ "height", "width" ], function( i, name ) {
 					// in IE throws an error.
 					( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ?
 						swap( elem, cssShow, function() {
-							return getWidthOrHeight( elem, name, extra );
+							return getWidthOrHeight( elem, dimension, extra );
 						} ) :
-						getWidthOrHeight( elem, name, extra );
+						getWidthOrHeight( elem, dimension, extra );
 			}
 		},
 
 		set: function( elem, value, extra ) {
 			var matches,
-				styles = extra && getStyles( elem ),
-				subtract = extra && augmentWidthOrHeight(
-					elem,
-					name,
-					extra,
+				styles = getStyles( elem ),
+
+				// Only read styles.position if the test has a chance to fail
+				// to avoid forcing a reflow.
+				scrollboxSizeBuggy = !support.scrollboxSize() &&
+					styles.position === "absolute",
+
+				// To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991)
+				boxSizingNeeded = scrollboxSizeBuggy || extra,
+				isBorderBox = boxSizingNeeded &&
 					jQuery.css( elem, "boxSizing", false, styles ) === "border-box",
-					styles
+				subtract = extra ?
+					boxModelAdjustment(
+						elem,
+						dimension,
+						extra,
+						isBorderBox,
+						styles
+					) :
+					0;
+
+			// Account for unreliable border-box dimensions by comparing offset* to computed and
+			// faking a content-box to get border and padding (gh-3699)
+			if ( isBorderBox && scrollboxSizeBuggy ) {
+				subtract -= Math.ceil(
+					elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] -
+					parseFloat( styles[ dimension ] ) -
+					boxModelAdjustment( elem, dimension, "border", false, styles ) -
+					0.5
 				);
+			}
 
 			// Convert to pixels if value adjustment is needed
 			if ( subtract && ( matches = rcssNum.exec( value ) ) &&
 				( matches[ 3 ] || "px" ) !== "px" ) {
 
-				elem.style[ name ] = value;
-				value = jQuery.css( elem, name );
+				elem.style[ dimension ] = value;
+				value = jQuery.css( elem, dimension );
 			}
 
 			return setPositiveNumber( elem, value, subtract );
@@ -6618,7 +6870,7 @@ jQuery.each( {
 		}
 	};
 
-	if ( !rmargin.test( prefix ) ) {
+	if ( prefix !== "margin" ) {
 		jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber;
 	}
 } );
@@ -6728,9 +6980,9 @@ Tween.propHooks = {
 			// Use .style if available and use plain properties where available.
 			if ( jQuery.fx.step[ tween.prop ] ) {
 				jQuery.fx.step[ tween.prop ]( tween );
-			} else if ( tween.elem.nodeType === 1 &&
-				( tween.elem.style[ jQuery.cssProps[ tween.prop ] ] != null ||
-					jQuery.cssHooks[ tween.prop ] ) ) {
+			} else if ( tween.elem.nodeType === 1 && (
+					jQuery.cssHooks[ tween.prop ] ||
+					tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) {
 				jQuery.style( tween.elem, tween.prop, tween.now + tween.unit );
 			} else {
 				tween.elem[ tween.prop ] = tween.now;
@@ -6789,7 +7041,7 @@ function createFxNow() {
 	window.setTimeout( function() {
 		fxNow = undefined;
 	} );
-	return ( fxNow = jQuery.now() );
+	return ( fxNow = Date.now() );
 }
 
 // Generate parameters to create a standard animation
@@ -6893,9 +7145,10 @@ function defaultPrefilter( elem, props, opts ) {
 	// Restrict "overflow" and "display" styles during box animations
 	if ( isBox && elem.nodeType === 1 ) {
 
-		// Support: IE <=9 - 11, Edge 12 - 13
+		// Support: IE <=9 - 11, Edge 12 - 15
 		// Record all 3 overflow attributes because IE does not infer the shorthand
-		// from identically-valued overflowX and overflowY
+		// from identically-valued overflowX and overflowY and Edge just mirrors
+		// the overflowX value there.
 		opts.overflow = [ style.overflow, style.overflowX, style.overflowY ];
 
 		// Identify a display type, preferring old show/hide data over the CSS cascade
@@ -7003,7 +7256,7 @@ function propFilter( props, specialEasing ) {
 
 	// camelCase, specialEasing and expand cssHook pass
 	for ( index in props ) {
-		name = jQuery.camelCase( index );
+		name = camelCase( index );
 		easing = specialEasing[ name ];
 		value = props[ index ];
 		if ( Array.isArray( value ) ) {
@@ -7128,9 +7381,9 @@ function Animation( elem, properties, options ) {
 	for ( ; index < length; index++ ) {
 		result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts );
 		if ( result ) {
-			if ( jQuery.isFunction( result.stop ) ) {
+			if ( isFunction( result.stop ) ) {
 				jQuery._queueHooks( animation.elem, animation.opts.queue ).stop =
-					jQuery.proxy( result.stop, result );
+					result.stop.bind( result );
 			}
 			return result;
 		}
@@ -7138,7 +7391,7 @@ function Animation( elem, properties, options ) {
 
 	jQuery.map( props, createTween, animation );
 
-	if ( jQuery.isFunction( animation.opts.start ) ) {
+	if ( isFunction( animation.opts.start ) ) {
 		animation.opts.start.call( elem, animation );
 	}
 
@@ -7171,7 +7424,7 @@ jQuery.Animation = jQuery.extend( Animation, {
 	},
 
 	tweener: function( props, callback ) {
-		if ( jQuery.isFunction( props ) ) {
+		if ( isFunction( props ) ) {
 			callback = props;
 			props = [ "*" ];
 		} else {
@@ -7203,9 +7456,9 @@ jQuery.Animation = jQuery.extend( Animation, {
 jQuery.speed = function( speed, easing, fn ) {
 	var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : {
 		complete: fn || !fn && easing ||
-			jQuery.isFunction( speed ) && speed,
+			isFunction( speed ) && speed,
 		duration: speed,
-		easing: fn && easing || easing && !jQuery.isFunction( easing ) && easing
+		easing: fn && easing || easing && !isFunction( easing ) && easing
 	};
 
 	// Go to the end state if fx are off
@@ -7232,7 +7485,7 @@ jQuery.speed = function( speed, easing, fn ) {
 	opt.old = opt.complete;
 
 	opt.complete = function() {
-		if ( jQuery.isFunction( opt.old ) ) {
+		if ( isFunction( opt.old ) ) {
 			opt.old.call( this );
 		}
 
@@ -7396,7 +7649,7 @@ jQuery.fx.tick = function() {
 		i = 0,
 		timers = jQuery.timers;
 
-	fxNow = jQuery.now();
+	fxNow = Date.now();
 
 	for ( ; i < timers.length; i++ ) {
 		timer = timers[ i ];
@@ -7749,7 +8002,7 @@ jQuery.each( [
 
 
 	// Strip and collapse whitespace according to HTML spec
-	// https://html.spec.whatwg.org/multipage/infrastructure.html#strip-and-collapse-whitespace
+	// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
 	function stripAndCollapse( value ) {
 		var tokens = value.match( rnothtmlwhite ) || [];
 		return tokens.join( " " );
@@ -7760,20 +8013,30 @@ function getClass( elem ) {
 	return elem.getAttribute && elem.getAttribute( "class" ) || "";
 }
 
+function classesToArray( value ) {
+	if ( Array.isArray( value ) ) {
+		return value;
+	}
+	if ( typeof value === "string" ) {
+		return value.match( rnothtmlwhite ) || [];
+	}
+	return [];
+}
+
 jQuery.fn.extend( {
 	addClass: function( value ) {
 		var classes, elem, cur, curValue, clazz, j, finalValue,
 			i = 0;
 
-		if ( jQuery.isFunction( value ) ) {
+		if ( isFunction( value ) ) {
 			return this.each( function( j ) {
 				jQuery( this ).addClass( value.call( this, j, getClass( this ) ) );
 			} );
 		}
 
-		if ( typeof value === "string" && value ) {
-			classes = value.match( rnothtmlwhite ) || [];
+		classes = classesToArray( value );
 
+		if ( classes.length ) {
 			while ( ( elem = this[ i++ ] ) ) {
 				curValue = getClass( elem );
 				cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " );
@@ -7802,7 +8065,7 @@ jQuery.fn.extend( {
 		var classes, elem, cur, curValue, clazz, j, finalValue,
 			i = 0;
 
-		if ( jQuery.isFunction( value ) ) {
+		if ( isFunction( value ) ) {
 			return this.each( function( j ) {
 				jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) );
 			} );
@@ -7812,9 +8075,9 @@ jQuery.fn.extend( {
 			return this.attr( "class", "" );
 		}
 
-		if ( typeof value === "string" && value ) {
-			classes = value.match( rnothtmlwhite ) || [];
+		classes = classesToArray( value );
 
+		if ( classes.length ) {
 			while ( ( elem = this[ i++ ] ) ) {
 				curValue = getClass( elem );
 
@@ -7844,13 +8107,14 @@ jQuery.fn.extend( {
 	},
 
 	toggleClass: function( value, stateVal ) {
-		var type = typeof value;
+		var type = typeof value,
+			isValidValue = type === "string" || Array.isArray( value );
 
-		if ( typeof stateVal === "boolean" && type === "string" ) {
+		if ( typeof stateVal === "boolean" && isValidValue ) {
 			return stateVal ? this.addClass( value ) : this.removeClass( value );
 		}
 
-		if ( jQuery.isFunction( value ) ) {
+		if ( isFunction( value ) ) {
 			return this.each( function( i ) {
 				jQuery( this ).toggleClass(
 					value.call( this, i, getClass( this ), stateVal ),
@@ -7862,12 +8126,12 @@ jQuery.fn.extend( {
 		return this.each( function() {
 			var className, i, self, classNames;
 
-			if ( type === "string" ) {
+			if ( isValidValue ) {
 
 				// Toggle individual class names
 				i = 0;
 				self = jQuery( this );
-				classNames = value.match( rnothtmlwhite ) || [];
+				classNames = classesToArray( value );
 
 				while ( ( className = classNames[ i++ ] ) ) {
 
@@ -7926,7 +8190,7 @@ var rreturn = /\r/g;
 
 jQuery.fn.extend( {
 	val: function( value ) {
-		var hooks, ret, isFunction,
+		var hooks, ret, valueIsFunction,
 			elem = this[ 0 ];
 
 		if ( !arguments.length ) {
@@ -7955,7 +8219,7 @@ jQuery.fn.extend( {
 			return;
 		}
 
-		isFunction = jQuery.isFunction( value );
+		valueIsFunction = isFunction( value );
 
 		return this.each( function( i ) {
 			var val;
@@ -7964,7 +8228,7 @@ jQuery.fn.extend( {
 				return;
 			}
 
-			if ( isFunction ) {
+			if ( valueIsFunction ) {
 				val = value.call( this, i, jQuery( this ).val() );
 			} else {
 				val = value;
@@ -8106,18 +8370,24 @@ jQuery.each( [ "radio", "checkbox" ], function() {
 // Return jQuery for attributes-only inclusion
 
 
-var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/;
+support.focusin = "onfocusin" in window;
+
+
+var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+	stopPropagationCallback = function( e ) {
+		e.stopPropagation();
+	};
 
 jQuery.extend( jQuery.event, {
 
 	trigger: function( event, data, elem, onlyHandlers ) {
 
-		var i, cur, tmp, bubbleType, ontype, handle, special,
+		var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
 			eventPath = [ elem || document ],
 			type = hasOwn.call( event, "type" ) ? event.type : event,
 			namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : [];
 
-		cur = tmp = elem = elem || document;
+		cur = lastElement = tmp = elem = elem || document;
 
 		// Don't do events on text and comment nodes
 		if ( elem.nodeType === 3 || elem.nodeType === 8 ) {
@@ -8169,7 +8439,7 @@ jQuery.extend( jQuery.event, {
 
 		// Determine event propagation path in advance, per W3C events spec (#9951)
 		// Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
-		if ( !onlyHandlers && !special.noBubble && !jQuery.isWindow( elem ) ) {
+		if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) {
 
 			bubbleType = special.delegateType || type;
 			if ( !rfocusMorph.test( bubbleType + type ) ) {
@@ -8189,7 +8459,7 @@ jQuery.extend( jQuery.event, {
 		// Fire handlers on the event path
 		i = 0;
 		while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) {
-
+			lastElement = cur;
 			event.type = i > 1 ?
 				bubbleType :
 				special.bindType || type;
@@ -8221,7 +8491,7 @@ jQuery.extend( jQuery.event, {
 
 				// Call a native DOM method on the target with the same name as the event.
 				// Don't do default actions on window, that's where global variables be (#6170)
-				if ( ontype && jQuery.isFunction( elem[ type ] ) && !jQuery.isWindow( elem ) ) {
+				if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) {
 
 					// Don't re-trigger an onFOO event when we call its FOO() method
 					tmp = elem[ ontype ];
@@ -8232,7 +8502,17 @@ jQuery.extend( jQuery.event, {
 
 					// Prevent re-triggering of the same event, since we already bubbled it above
 					jQuery.event.triggered = type;
+
+					if ( event.isPropagationStopped() ) {
+						lastElement.addEventListener( type, stopPropagationCallback );
+					}
+
 					elem[ type ]();
+
+					if ( event.isPropagationStopped() ) {
+						lastElement.removeEventListener( type, stopPropagationCallback );
+					}
+
 					jQuery.event.triggered = undefined;
 
 					if ( tmp ) {
@@ -8278,31 +8558,6 @@ jQuery.fn.extend( {
 } );
 
 
-jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
-	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
-	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
-	function( i, name ) {
-
-	// Handle event binding
-	jQuery.fn[ name ] = function( data, fn ) {
-		return arguments.length > 0 ?
-			this.on( name, null, data, fn ) :
-			this.trigger( name );
-	};
-} );
-
-jQuery.fn.extend( {
-	hover: function( fnOver, fnOut ) {
-		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
-	}
-} );
-
-
-
-
-support.focusin = "onfocusin" in window;
-
-
 // Support: Firefox <=44
 // Firefox doesn't have focus(in | out) events
 // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
@@ -8346,7 +8601,7 @@ if ( !support.focusin ) {
 }
 var location = window.location;
 
-var nonce = jQuery.now();
+var nonce = Date.now();
 
 var rquery = ( /\?/ );
 
@@ -8404,7 +8659,7 @@ function buildParams( prefix, obj, traditional, add ) {
 			}
 		} );
 
-	} else if ( !traditional && jQuery.type( obj ) === "object" ) {
+	} else if ( !traditional && toType( obj ) === "object" ) {
 
 		// Serialize object item.
 		for ( name in obj ) {
@@ -8426,7 +8681,7 @@ jQuery.param = function( a, traditional ) {
 		add = function( key, valueOrFunction ) {
 
 			// If value is a function, invoke it and use its return value
-			var value = jQuery.isFunction( valueOrFunction ) ?
+			var value = isFunction( valueOrFunction ) ?
 				valueOrFunction() :
 				valueOrFunction;
 
@@ -8434,6 +8689,10 @@ jQuery.param = function( a, traditional ) {
 				encodeURIComponent( value == null ? "" : value );
 		};
 
+	if ( a == null ) {
+		return "";
+	}
+
 	// If an array was passed in, assume that it is an array of form elements.
 	if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) {
 
@@ -8544,7 +8803,7 @@ function addToPrefiltersOrTransports( structure ) {
 			i = 0,
 			dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || [];
 
-		if ( jQuery.isFunction( func ) ) {
+		if ( isFunction( func ) ) {
 
 			// For each dataType in the dataTypeExpression
 			while ( ( dataType = dataTypes[ i++ ] ) ) {
@@ -8936,12 +9195,14 @@ jQuery.extend( {
 						if ( !responseHeaders ) {
 							responseHeaders = {};
 							while ( ( match = rheaders.exec( responseHeadersString ) ) ) {
-								responseHeaders[ match[ 1 ].toLowerCase() ] = match[ 2 ];
+								responseHeaders[ match[ 1 ].toLowerCase() + " " ] =
+									( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] )
+										.concat( match[ 2 ] );
 							}
 						}
-						match = responseHeaders[ key.toLowerCase() ];
+						match = responseHeaders[ key.toLowerCase() + " " ];
 					}
-					return match == null ? null : match;
+					return match == null ? null : match.join( ", " );
 				},
 
 				// Raw string
@@ -9016,7 +9277,7 @@ jQuery.extend( {
 		if ( s.crossDomain == null ) {
 			urlAnchor = document.createElement( "a" );
 
-			// Support: IE <=8 - 11, Edge 12 - 13
+			// Support: IE <=8 - 11, Edge 12 - 15
 			// IE throws exception on accessing the href property if url is malformed,
 			// e.g. http://example.com:80x/
 			try {
@@ -9074,8 +9335,8 @@ jQuery.extend( {
 			// Remember the hash so we can put it back
 			uncached = s.url.slice( cacheURL.length );
 
-			// If data is available, append data to url
-			if ( s.data ) {
+			// If data is available and should be processed, append data to url
+			if ( s.data && ( s.processData || typeof s.data === "string" ) ) {
 				cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data;
 
 				// #9682: remove data so that it's not used in an eventual retry
@@ -9312,7 +9573,7 @@ jQuery.each( [ "get", "post" ], function( i, method ) {
 	jQuery[ method ] = function( url, data, callback, type ) {
 
 		// Shift arguments if data argument was omitted
-		if ( jQuery.isFunction( data ) ) {
+		if ( isFunction( data ) ) {
 			type = type || callback;
 			callback = data;
 			data = undefined;
@@ -9330,7 +9591,7 @@ jQuery.each( [ "get", "post" ], function( i, method ) {
 } );
 
 
-jQuery._evalUrl = function( url ) {
+jQuery._evalUrl = function( url, options ) {
 	return jQuery.ajax( {
 		url: url,
 
@@ -9340,7 +9601,16 @@ jQuery._evalUrl = function( url ) {
 		cache: true,
 		async: false,
 		global: false,
-		"throws": true
+
+		// Only evaluate the response if it is successful (gh-4126)
+		// dataFilter is not invoked for failure responses, so using it instead
+		// of the default converter is kludgy but it works.
+		converters: {
+			"text script": function() {}
+		},
+		dataFilter: function( response ) {
+			jQuery.globalEval( response, options );
+		}
 	} );
 };
 
@@ -9350,7 +9620,7 @@ jQuery.fn.extend( {
 		var wrap;
 
 		if ( this[ 0 ] ) {
-			if ( jQuery.isFunction( html ) ) {
+			if ( isFunction( html ) ) {
 				html = html.call( this[ 0 ] );
 			}
 
@@ -9376,7 +9646,7 @@ jQuery.fn.extend( {
 	},
 
 	wrapInner: function( html ) {
-		if ( jQuery.isFunction( html ) ) {
+		if ( isFunction( html ) ) {
 			return this.each( function( i ) {
 				jQuery( this ).wrapInner( html.call( this, i ) );
 			} );
@@ -9396,10 +9666,10 @@ jQuery.fn.extend( {
 	},
 
 	wrap: function( html ) {
-		var isFunction = jQuery.isFunction( html );
+		var htmlIsFunction = isFunction( html );
 
 		return this.each( function( i ) {
-			jQuery( this ).wrapAll( isFunction ? html.call( this, i ) : html );
+			jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html );
 		} );
 	},
 
@@ -9491,7 +9761,8 @@ jQuery.ajaxTransport( function( options ) {
 					return function() {
 						if ( callback ) {
 							callback = errorCallback = xhr.onload =
-								xhr.onerror = xhr.onabort = xhr.onreadystatechange = null;
+								xhr.onerror = xhr.onabort = xhr.ontimeout =
+									xhr.onreadystatechange = null;
 
 							if ( type === "abort" ) {
 								xhr.abort();
@@ -9531,7 +9802,7 @@ jQuery.ajaxTransport( function( options ) {
 
 				// Listen to events
 				xhr.onload = callback();
-				errorCallback = xhr.onerror = callback( "error" );
+				errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" );
 
 				// Support: IE 9 only
 				// Use onreadystatechange to replace onabort
@@ -9622,24 +9893,21 @@ jQuery.ajaxPrefilter( "script", function( s ) {
 // Bind script tag hack transport
 jQuery.ajaxTransport( "script", function( s ) {
 
-	// This transport only deals with cross domain requests
-	if ( s.crossDomain ) {
+	// This transport only deals with cross domain or forced-by-attrs requests
+	if ( s.crossDomain || s.scriptAttrs ) {
 		var script, callback;
 		return {
 			send: function( _, complete ) {
-				script = jQuery( "<script>" ).prop( {
-					charset: s.scriptCharset,
-					src: s.url
-				} ).on(
-					"load error",
-					callback = function( evt ) {
+				script = jQuery( "<script>" )
+					.attr( s.scriptAttrs || {} )
+					.prop( { charset: s.scriptCharset, src: s.url } )
+					.on( "load error", callback = function( evt ) {
 						script.remove();
 						callback = null;
 						if ( evt ) {
 							complete( evt.type === "error" ? 404 : 200, evt.type );
 						}
-					}
-				);
+					} );
 
 				// Use native DOM manipulation to avoid our domManip AJAX trickery
 				document.head.appendChild( script[ 0 ] );
@@ -9685,7 +9953,7 @@ jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
 	if ( jsonProp || s.dataTypes[ 0 ] === "jsonp" ) {
 
 		// Get callback name, remembering preexisting value associated with it
-		callbackName = s.jsonpCallback = jQuery.isFunction( s.jsonpCallback ) ?
+		callbackName = s.jsonpCallback = isFunction( s.jsonpCallback ) ?
 			s.jsonpCallback() :
 			s.jsonpCallback;
 
@@ -9736,7 +10004,7 @@ jQuery.ajaxPrefilter( "json jsonp", function( s, originalSettings, jqXHR ) {
 			}
 
 			// Call if it was a function and we have a response
-			if ( responseContainer && jQuery.isFunction( overwritten ) ) {
+			if ( responseContainer && isFunction( overwritten ) ) {
 				overwritten( responseContainer[ 0 ] );
 			}
 
@@ -9828,7 +10096,7 @@ jQuery.fn.load = function( url, params, callback ) {
 	}
 
 	// If it's a function
-	if ( jQuery.isFunction( params ) ) {
+	if ( isFunction( params ) ) {
 
 		// We assume that it's the callback
 		callback = params;
@@ -9936,7 +10204,7 @@ jQuery.offset = {
 			curLeft = parseFloat( curCSSLeft ) || 0;
 		}
 
-		if ( jQuery.isFunction( options ) ) {
+		if ( isFunction( options ) ) {
 
 			// Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
 			options = options.call( elem, i, jQuery.extend( {}, curOffset ) );
@@ -9959,6 +10227,8 @@ jQuery.offset = {
 };
 
 jQuery.fn.extend( {
+
+	// offset() relates an element's border box to the document origin
 	offset: function( options ) {
 
 		// Preserve chaining for setter
@@ -9970,7 +10240,7 @@ jQuery.fn.extend( {
 				} );
 		}
 
-		var doc, docElem, rect, win,
+		var rect, win,
 			elem = this[ 0 ];
 
 		if ( !elem ) {
@@ -9985,50 +10255,52 @@ jQuery.fn.extend( {
 			return { top: 0, left: 0 };
 		}
 
+		// Get document-relative position by adding viewport scroll to viewport-relative gBCR
 		rect = elem.getBoundingClientRect();
-
-		doc = elem.ownerDocument;
-		docElem = doc.documentElement;
-		win = doc.defaultView;
-
+		win = elem.ownerDocument.defaultView;
 		return {
-			top: rect.top + win.pageYOffset - docElem.clientTop,
-			left: rect.left + win.pageXOffset - docElem.clientLeft
+			top: rect.top + win.pageYOffset,
+			left: rect.left + win.pageXOffset
 		};
 	},
 
+	// position() relates an element's margin box to its offset parent's padding box
+	// This corresponds to the behavior of CSS absolute positioning
 	position: function() {
 		if ( !this[ 0 ] ) {
 			return;
 		}
 
-		var offsetParent, offset,
+		var offsetParent, offset, doc,
 			elem = this[ 0 ],
 			parentOffset = { top: 0, left: 0 };
 
-		// Fixed elements are offset from window (parentOffset = {top:0, left: 0},
-		// because it is its only offset parent
+		// position:fixed elements are offset from the viewport, which itself always has zero offset
 		if ( jQuery.css( elem, "position" ) === "fixed" ) {
 
-			// Assume getBoundingClientRect is there when computed position is fixed
+			// Assume position:fixed implies availability of getBoundingClientRect
 			offset = elem.getBoundingClientRect();
 
 		} else {
+			offset = this.offset();
 
-			// Get *real* offsetParent
-			offsetParent = this.offsetParent();
+			// Account for the *real* offset parent, which can be the document or its root element
+			// when a statically positioned element is identified
+			doc = elem.ownerDocument;
+			offsetParent = elem.offsetParent || doc.documentElement;
+			while ( offsetParent &&
+				( offsetParent === doc.body || offsetParent === doc.documentElement ) &&
+				jQuery.css( offsetParent, "position" ) === "static" ) {
 
-			// Get correct offsets
-			offset = this.offset();
-			if ( !nodeName( offsetParent[ 0 ], "html" ) ) {
-				parentOffset = offsetParent.offset();
+				offsetParent = offsetParent.parentNode;
 			}
+			if ( offsetParent && offsetParent !== elem && offsetParent.nodeType === 1 ) {
 
-			// Add offsetParent borders
-			parentOffset = {
-				top: parentOffset.top + jQuery.css( offsetParent[ 0 ], "borderTopWidth", true ),
-				left: parentOffset.left + jQuery.css( offsetParent[ 0 ], "borderLeftWidth", true )
-			};
+				// Incorporate borders into its offset, since they are outside its content origin
+				parentOffset = jQuery( offsetParent ).offset();
+				parentOffset.top += jQuery.css( offsetParent, "borderTopWidth", true );
+				parentOffset.left += jQuery.css( offsetParent, "borderLeftWidth", true );
+			}
 		}
 
 		// Subtract parent offsets and element margins
@@ -10070,7 +10342,7 @@ jQuery.each( { scrollLeft: "pageXOffset", scrollTop: "pageYOffset" }, function(
 
 			// Coalesce documents and windows
 			var win;
-			if ( jQuery.isWindow( elem ) ) {
+			if ( isWindow( elem ) ) {
 				win = elem;
 			} else if ( elem.nodeType === 9 ) {
 				win = elem.defaultView;
@@ -10128,7 +10400,7 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 			return access( this, function( elem, type, value ) {
 				var doc;
 
-				if ( jQuery.isWindow( elem ) ) {
+				if ( isWindow( elem ) ) {
 
 					// $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
 					return funcName.indexOf( "outer" ) === 0 ?
@@ -10162,6 +10434,28 @@ jQuery.each( { Height: "height", Width: "width" }, function( name, type ) {
 } );
 
 
+jQuery.each( ( "blur focus focusin focusout resize scroll click dblclick " +
+	"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+	"change select submit keydown keypress keyup contextmenu" ).split( " " ),
+	function( i, name ) {
+
+	// Handle event binding
+	jQuery.fn[ name ] = function( data, fn ) {
+		return arguments.length > 0 ?
+			this.on( name, null, data, fn ) :
+			this.trigger( name );
+	};
+} );
+
+jQuery.fn.extend( {
+	hover: function( fnOver, fnOut ) {
+		return this.mouseenter( fnOver ).mouseleave( fnOut || fnOver );
+	}
+} );
+
+
+
+
 jQuery.fn.extend( {
 
 	bind: function( types, data, fn ) {
@@ -10183,6 +10477,37 @@ jQuery.fn.extend( {
 	}
 } );
 
+// Bind a function to a context, optionally partially applying any
+// arguments.
+// jQuery.proxy is deprecated to promote standards (specifically Function#bind)
+// However, it is not slated for removal any time soon
+jQuery.proxy = function( fn, context ) {
+	var tmp, args, proxy;
+
+	if ( typeof context === "string" ) {
+		tmp = fn[ context ];
+		context = fn;
+		fn = tmp;
+	}
+
+	// Quick check to determine if target is callable, in the spec
+	// this throws a TypeError, but we will just return undefined.
+	if ( !isFunction( fn ) ) {
+		return undefined;
+	}
+
+	// Simulated bind
+	args = slice.call( arguments, 2 );
+	proxy = function() {
+		return fn.apply( context || this, args.concat( slice.call( arguments ) ) );
+	};
+
+	// Set the guid of unique handler to the same of original handler, so it can be removed
+	proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+	return proxy;
+};
+
 jQuery.holdReady = function( hold ) {
 	if ( hold ) {
 		jQuery.readyWait++;
@@ -10193,6 +10518,26 @@ jQuery.holdReady = function( hold ) {
 jQuery.isArray = Array.isArray;
 jQuery.parseJSON = JSON.parse;
 jQuery.nodeName = nodeName;
+jQuery.isFunction = isFunction;
+jQuery.isWindow = isWindow;
+jQuery.camelCase = camelCase;
+jQuery.type = toType;
+
+jQuery.now = Date.now;
+
+jQuery.isNumeric = function( obj ) {
+
+	// As of jQuery 3.0, isNumeric is limited to
+	// strings and numbers (primitives or objects)
+	// that can be coerced to finite numbers (gh-2662)
+	var type = jQuery.type( obj );
+	return ( type === "number" || type === "string" ) &&
+
+		// parseFloat NaNs numeric-cast false positives ("")
+		// ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+		// subtraction forces infinities to NaN
+		!isNaN( obj - parseFloat( obj ) );
+};
 
 
 
diff --git a/sphinx/themes/basic/static/jquery.js b/sphinx/themes/basic/static/jquery.js
index 644d35e274f..a1c07fd803b 100644
--- a/sphinx/themes/basic/static/jquery.js
+++ b/sphinx/themes/basic/static/jquery.js
@@ -1,4 +1,2 @@
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diff --git a/tests/test_theming.py b/tests/test_theming.py
index a60a77129af..c90e1e9ac82 100644
--- a/tests/test_theming.py
+++ b/tests/test_theming.py
@@ -74,7 +74,7 @@ def test_js_source(app, status, warning):
 
     app.builder.build(['contents'])
 
-    v = '3.2.1'
+    v = '3.4.1'
     msg = 'jquery.js version does not match to {v}'.format(v=v)
     jquery_min = (app.outdir / '_static' / 'jquery.js').text()
     assert 'jQuery v{v}'.format(v=v) in jquery_min, msg

From 81736cc8281707c79ee5aa388953fc2a32d419d1 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 22 Jul 2019 00:35:28 +0900
Subject: [PATCH 03/16] Test with docutils-0.14 (previous release)

---
 .travis.yml | 2 +-
 tox.ini     | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 8aaa96ebe9a..cb7ee3c5a1e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,7 +19,7 @@ matrix:
         - TOXENV=du13
     - python: '3.7'
       env:
-        - TOXENV=py37
+        - TOXENV=du14
         - PYTEST_ADDOPTS="--cov ./ --cov-append --cov-config setup.cfg"
     - python: 'nightly'
       env: TOXENV=py38
diff --git a/tox.ini b/tox.ini
index 0fd015b3e47..c4ffe33cb80 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.4.0
-envlist = docs,flake8,mypy,coverage,py{35,36,37,38},du{12,13,14}
+envlist = docs,flake8,mypy,coverage,py{35,36,37,38},du{12,13,14,15}
 
 [testenv]
 usedevelop = True
@@ -13,6 +13,7 @@ deps =
     du12: docutils==0.12
     du13: docutils==0.13.1
     du14: docutils==0.14
+    du15: docutils==0.15
 extras =
     test
 setenv =

From ace7b4ded765b69a0a60e0a1dc8bda551cd66d56 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Sun, 21 Jul 2019 20:18:55 +0900
Subject: [PATCH 04/16] Fix #6589: autodoc: Formatting issues with
 autodoc_typehints='none'

---
 CHANGES                           | 1 +
 sphinx/util/inspect.py            | 4 ++--
 tests/test_ext_autodoc_configs.py | 6 +++---
 tests/test_util_inspect.py        | 4 ++++
 4 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/CHANGES b/CHANGES
index 391a2858ad2..d63aa31c991 100644
--- a/CHANGES
+++ b/CHANGES
@@ -50,6 +50,7 @@ Bugs fixed
   ``__init__()`` and ``__new__()``
 * #6574: autodoc: :confval:`autodoc_member_order` does not refer order of
   imports when ``'bysource'`` order
+* #6589: autodoc: Formatting issues with autodoc_typehints='none'
 * #6498: autosummary: crashed with wrong autosummary_generate setting
 * #6507: autosummary: crashes without no autosummary_generate setting
 * #6511: LaTeX: autonumbered list can not be customized in LaTeX
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index d195dea0b09..d6d89a6b1fa 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -428,7 +428,7 @@ def format_args(self, show_annotation: bool = True) -> str:
                         arg.write(': ')
                         arg.write(self.format_annotation(param.annotation))
                 if param.default is not param.empty:
-                    if param.annotation is param.empty:
+                    if param.annotation is param.empty or show_annotation is False:
                         arg.write('=')
                         arg.write(object_description(param.default))
                     else:
@@ -444,7 +444,7 @@ def format_args(self, show_annotation: bool = True) -> str:
             args.append(arg.getvalue())
             last_kind = param.kind
 
-        if self.return_annotation is inspect.Parameter.empty:
+        if self.return_annotation is inspect.Parameter.empty or show_annotation is False:
             return '(%s)' % ', '.join(args)
         else:
             if 'return' in self.annotations:
diff --git a/tests/test_ext_autodoc_configs.py b/tests/test_ext_autodoc_configs.py
index 1a7224b11e3..b9a92fb0494 100644
--- a/tests/test_ext_autodoc_configs.py
+++ b/tests/test_ext_autodoc_configs.py
@@ -501,15 +501,15 @@ def test_autodoc_typehints_none(app):
         '.. py:module:: target.typehints',
         '',
         '',
-        '.. py:class:: Math(s, o = None)',
+        '.. py:class:: Math(s, o=None)',
         '   :module: target.typehints',
         '',
         '   ',
-        '   .. py:method:: Math.incr(a, b = 1) -> int',
+        '   .. py:method:: Math.incr(a, b=1)',
         '      :module: target.typehints',
         '   ',
         '',
-        '.. py:function:: incr(a, b = 1) -> int',
+        '.. py:function:: incr(a, b=1)',
         '   :module: target.typehints',
         ''
     ]
diff --git a/tests/test_util_inspect.py b/tests/test_util_inspect.py
index 0681352e370..047f36ac2c0 100644
--- a/tests/test_util_inspect.py
+++ b/tests/test_util_inspect.py
@@ -285,6 +285,10 @@ def test_Signature_annotations():
     sig = inspect.Signature(Node.__init__).format_args()
     assert sig == '(self, parent: Optional[Node]) -> None'
 
+    # show_annotation is False
+    sig = inspect.Signature(f7).format_args(show_annotation=False)
+    assert sig == '(x=None, y={})'
+
 
 def test_safe_getattr_with_default():
     class Foo:

From ec71c4d14a83b10aacfb0eb8fe5e5eeb1349d7ef Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Fri, 2 Aug 2019 02:07:40 +0900
Subject: [PATCH 05/16] Fix #6474: ``DocFieldTransformer`` raises
 AttributeError

---
 CHANGES                  | 2 ++
 sphinx/util/docfields.py | 9 ++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/CHANGES b/CHANGES
index 391a2858ad2..fcb5bf17c9f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -64,6 +64,8 @@ Bugs fixed
 * #6561: glossary: Wrong hyperlinks are generated for non alphanumeric terms
 * #6620: i18n: classifiers of definition list are not translated with
   docutils-0.15
+* #6474: ``DocFieldTransformer`` raises AttributeError when given directive is
+  not a subclass of ObjectDescription
 
 Testing
 --------
diff --git a/sphinx/util/docfields.py b/sphinx/util/docfields.py
index 1e8596e5b59..dd9854ce6db 100644
--- a/sphinx/util/docfields.py
+++ b/sphinx/util/docfields.py
@@ -218,7 +218,14 @@ class DocFieldTransformer:
 
     def __init__(self, directive: "ObjectDescription") -> None:
         self.directive = directive
-        self.typemap = directive.get_field_type_map()
+
+        try:
+            self.typemap = directive.get_field_type_map()
+        except Exception:
+            # for 3rd party extensions directly calls this transformer.
+            warnings.warn('DocFieldTransformer expects given directive object is a subclass '
+                          'of ObjectDescription.', RemovedInSphinx40Warning)
+            self.typemap = self.preprocess_fieldtypes(directive.__class__.doc_field_types)
 
     def preprocess_fieldtypes(self, types: List[Field]) -> Dict[str, Tuple[Field, bool]]:
         warnings.warn('DocFieldTransformer.preprocess_fieldtypes() is deprecated.',

From a503ed8b781cd19f601b5294518aeb8adb9f011e Mon Sep 17 00:00:00 2001
From: Steve Piercy <web@stevepiercy.com>
Date: Fri, 2 Aug 2019 10:27:32 -0700
Subject: [PATCH 06/16] Update links in quickstart template to save redirects

---
 sphinx/templates/quickstart/conf.py_t | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/sphinx/templates/quickstart/conf.py_t b/sphinx/templates/quickstart/conf.py_t
index f9f96b22107..8a20fc4c8a3 100644
--- a/sphinx/templates/quickstart/conf.py_t
+++ b/sphinx/templates/quickstart/conf.py_t
@@ -2,7 +2,7 @@
 #
 # This file only contains a selection of the most common options. For a full
 # list see the documentation:
-# http://www.sphinx-doc.org/en/master/config
+# https://www.sphinx-doc.org/en/master/usage/configuration.html
 
 # -- Path setup --------------------------------------------------------------
 
@@ -105,7 +105,7 @@ html_static_path = ['{{ dot }}static']
 # -- Options for intersphinx extension ---------------------------------------
 
 # Example configuration for intersphinx: refer to the Python standard library.
-intersphinx_mapping = {'https://docs.python.org/': None}
+intersphinx_mapping = {'https://docs.python.org/3/': None}
 {%- endif %}
 {%- if 'sphinx.ext.todo' in extensions %}
 
@@ -114,4 +114,3 @@ intersphinx_mapping = {'https://docs.python.org/': None}
 # If true, `todo` and `todoList` produce output, else they produce nothing.
 todo_include_todos = True
 {%- endif %}
-

From 4ae5414ee55ae6cbe70e6bf360c06f5d31754be9 Mon Sep 17 00:00:00 2001
From: jfbu <jfbu@free.fr>
Date: Sat, 3 Aug 2019 12:00:24 +0200
Subject: [PATCH 07/16] Update our docs for imgmath_latex (refs: #6610)

---
 doc/usage/extensions/math.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/doc/usage/extensions/math.rst b/doc/usage/extensions/math.rst
index b269432e0b6..e5783671f46 100644
--- a/doc/usage/extensions/math.rst
+++ b/doc/usage/extensions/math.rst
@@ -80,6 +80,14 @@ are built:
    This value should only contain the path to the latex executable, not further
    arguments; use :confval:`imgmath_latex_args` for that purpose.
 
+   .. hint::
+
+      Some fancy LaTeX mark-up (an example was reported which used TikZ to add
+      various decorations to the equation) require multiple runs of the LaTeX
+      executable.  To handle this, set this configuration setting to
+      ``'latexmk'`` (or a full path to it) as this Perl script reliably
+      chooses dynamically how many latex runs are needed.
+
 .. confval:: imgmath_latex_args
 
    Additional arguments to give to latex, as a list.  The default is an empty

From bbc11a059f9f7d1e5cfeb216ab0b73341e697a0c Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 5 Aug 2019 01:22:30 +0900
Subject: [PATCH 08/16] Update CHANGES for PR #6628

---
 CHANGES | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGES b/CHANGES
index 63368fa59ec..9f2469ec4cc 100644
--- a/CHANGES
+++ b/CHANGES
@@ -35,6 +35,8 @@ Features added
 * #6310: imgmath: let :confval:`imgmath_use_preview` work also with the SVG
   format for images rendering inline math
 * #6533: LaTeX: refactor visit_enumerated_list() to use ``\sphinxsetlistlabels``
+* #6628: quickstart: Use ``https://docs.python.org/3/`` for default setting of
+  :confval:`intersphinx_mapping`
 
 Bugs fixed
 ----------

From c0e46adc070eebd6470a81e877d471011b032e2e Mon Sep 17 00:00:00 2001
From: Eric Larson <larson.eric.d@gmail.com>
Date: Fri, 31 May 2019 12:19:44 -0400
Subject: [PATCH 09/16] ENH: Explain rebuilds

---
 sphinx/builders/__init__.py    |  6 ++++--
 sphinx/environment/__init__.py | 26 ++++++++++++++++++--------
 tests/test_environment.py      | 16 +++++++++++++++-
 3 files changed, 37 insertions(+), 11 deletions(-)

diff --git a/sphinx/builders/__init__.py b/sphinx/builders/__init__.py
index b7e139b60e1..d2040498ecf 100644
--- a/sphinx/builders/__init__.py
+++ b/sphinx/builders/__init__.py
@@ -388,9 +388,11 @@ def read(self) -> List[str]:
             # ... but not those that already were removed
             changed.update(self.env.glob_toctrees & self.env.found_docs)
 
-        if changed:
-            reason = CONFIG_CHANGED_REASON.get(self.env.config_status, '')
+        if updated:  # explain the change iff build config status was not ok
+            reason = (CONFIG_CHANGED_REASON.get(self.env.config_status, '') +
+                      (self.env.config_status_extra or ''))
             logger.info('[%s] ', reason, nonl=True)
+
         logger.info(__('%s added, %s changed, %s removed'),
                     len(added), len(changed), len(removed))
 
diff --git a/sphinx/environment/__init__.py b/sphinx/environment/__init__.py
index 59d120e82f3..7f4a854b001 100644
--- a/sphinx/environment/__init__.py
+++ b/sphinx/environment/__init__.py
@@ -95,14 +95,15 @@ class BuildEnvironment:
     # --------- ENVIRONMENT INITIALIZATION -------------------------------------
 
     def __init__(self, app: "Sphinx" = None):
-        self.app = None             # type: Sphinx
-        self.doctreedir = None      # type: str
-        self.srcdir = None          # type: str
-        self.config = None          # type: Config
-        self.config_status = None   # type: int
-        self.events = None          # type: EventManager
-        self.project = None         # type: Project
-        self.version = None         # type: Dict[str, str]
+        self.app = None                  # type: Sphinx
+        self.doctreedir = None           # type: str
+        self.srcdir = None               # type: str
+        self.config = None               # type: Config
+        self.config_status = None        # type: int
+        self.config_status_extra = None  # type: str
+        self.events = None               # type: EventManager
+        self.project = None              # type: Project
+        self.version = None              # type: Dict[str, str]
 
         # the method of doctree versioning; see set_versioning_method
         self.versioning_condition = None  # type: Union[bool, Callable]
@@ -232,16 +233,25 @@ def setup(self, app: "Sphinx") -> None:
     def _update_config(self, config: Config) -> None:
         """Update configurations by new one."""
         self.config_status = CONFIG_OK
+        self.config_status_extra = ''
         if self.config is None:
             self.config_status = CONFIG_NEW
         elif self.config.extensions != config.extensions:
             self.config_status = CONFIG_EXTENSIONS_CHANGED
+            extensions = sorted(
+                set(self.config.extensions) ^ set(config.extensions))
+            if len(extensions) == 1:
+                extension = extensions[0]
+            else:
+                extension = '%d' % (len(extensions),)
+            self.config_status_extra = ' (%r)' % (extension,)
         else:
             # check if a config value was changed that affects how
             # doctrees are read
             for item in config.filter('env'):
                 if self.config[item.name] != item.value:
                     self.config_status = CONFIG_CHANGED
+                    self.config_status_extra = ' (%r)' % (item.name,)
                     break
 
         self.config = config
diff --git a/tests/test_environment.py b/tests/test_environment.py
index 1c6b49e64ab..fc3ae30c613 100644
--- a/tests/test_environment.py
+++ b/tests/test_environment.py
@@ -7,6 +7,8 @@
     :copyright: Copyright 2007-2019 by the Sphinx team, see AUTHORS.
     :license: BSD, see LICENSE for details.
 """
+import os
+import shutil
 import pytest
 
 from sphinx.builders.html import StandaloneHTMLBuilder
@@ -23,18 +25,30 @@ def test_config_status(make_app, app_params):
     app1 = make_app(*args, freshenv=True, **kwargs)
     assert app1.env.config_status == CONFIG_NEW
     app1.build()
+    assert '[new config] 1 added' in app1._status.getvalue()
 
     # incremental build (no config changed)
     app2 = make_app(*args, **kwargs)
     assert app2.env.config_status == CONFIG_OK
+    app2.build()
+    assert "0 added, 0 changed, 0 removed" in app2._status.getvalue()
 
     # incremental build (config entry changed)
-    app3 = make_app(*args, confoverrides={'master_doc': 'content'}, **kwargs)
+    app3 = make_app(*args, confoverrides={'master_doc': 'indexx'}, **kwargs)
+    fname = os.path.join(app3.srcdir, 'index.rst')
+    assert os.path.isfile(fname)
+    shutil.move(fname, fname[:-4] + 'x.rst')
     assert app3.env.config_status == CONFIG_CHANGED
+    app3.build()
+    shutil.move(fname[:-4] + 'x.rst', fname)
+    assert "[config changed ('master_doc')] 1 added" in app3._status.getvalue()
 
     # incremental build (extension changed)
     app4 = make_app(*args, confoverrides={'extensions': ['sphinx.ext.autodoc']}, **kwargs)
     assert app4.env.config_status == CONFIG_EXTENSIONS_CHANGED
+    app4.build()
+    want_str = "[extensions changed ('sphinx.ext.autodoc')] 1 added"
+    assert want_str in app4._status.getvalue()
 
 
 @pytest.mark.sphinx('dummy')

From ecb1e763ad0917ac37061b648a53793a687cc760 Mon Sep 17 00:00:00 2001
From: Jon Dufresne <jon.dufresne@gmail.com>
Date: Sat, 17 Aug 2019 11:45:39 -0700
Subject: [PATCH 10/16] Switch uses of __import__ to importlib.get_module()

The Python docs for __import__ recommend using importlib.get_module().

https://docs.python.org/3/library/functions.html#__import__

> Note: This is an advanced function that is not needed in everyday
> Python programming, unlike importlib.import_module().

As importlib.get_module() uses the Python module cache and returns the
module, this also allows simplifying many module cache checks of use of
sys.modules.

importlib.get_module() has been available since Python 3.3.
---
 sphinx/deprecation.py             |  5 +----
 sphinx/ext/autodoc/importer.py    |  7 +++----
 sphinx/ext/coverage.py            |  3 ++-
 sphinx/ext/inheritance_diagram.py | 12 +++++++-----
 sphinx/highlighting.py            |  3 ++-
 sphinx/registry.py                |  8 +++++---
 sphinx/search/__init__.py         |  4 ++--
 sphinx/util/__init__.py           | 19 ++++++++-----------
 tests/test_ext_autodoc_mock.py    | 11 ++++++-----
 9 files changed, 36 insertions(+), 36 deletions(-)

diff --git a/sphinx/deprecation.py b/sphinx/deprecation.py
index 7cdb1d3d1b6..57f4b3ddf5e 100644
--- a/sphinx/deprecation.py
+++ b/sphinx/deprecation.py
@@ -31,10 +31,7 @@ class RemovedInSphinx40Warning(PendingDeprecationWarning):
 
 def deprecated_alias(modname, objects, warning):
     # type: (str, Dict, Type[Warning]) -> None
-    module = sys.modules.get(modname)
-    if module is None:
-        module = import_module(modname)
-
+    module = import_module(modname)
     sys.modules[modname] = _ModuleWrapper(module, modname, objects, warning)  # type: ignore
 
 
diff --git a/sphinx/ext/autodoc/importer.py b/sphinx/ext/autodoc/importer.py
index fc934958d01..54901be446e 100644
--- a/sphinx/ext/autodoc/importer.py
+++ b/sphinx/ext/autodoc/importer.py
@@ -8,7 +8,7 @@
     :license: BSD, see LICENSE for details.
 """
 
-import sys
+import importlib
 import traceback
 import warnings
 from collections import namedtuple
@@ -23,14 +23,13 @@
 
 def import_module(modname: str, warningiserror: bool = False) -> Any:
     """
-    Call __import__(modname), convert exceptions to ImportError
+    Call importlib.import_module(modname), convert exceptions to ImportError
     """
     try:
         with warnings.catch_warnings():
             warnings.filterwarnings("ignore", category=ImportWarning)
             with logging.skip_warningiserror(not warningiserror):
-                __import__(modname)
-                return sys.modules[modname]
+                return importlib.import_module(modname)
     except BaseException as exc:
         # Importing modules may cause any side effects, including
         # SystemExit, so we need to catch all errors.
diff --git a/sphinx/ext/coverage.py b/sphinx/ext/coverage.py
index 24f51b856ba..7d53e7bb9fd 100644
--- a/sphinx/ext/coverage.py
+++ b/sphinx/ext/coverage.py
@@ -13,6 +13,7 @@
 import inspect
 import pickle
 import re
+from importlib import import_module
 from os import path
 from typing import Any, Dict, IO, List, Pattern, Set, Tuple
 
@@ -144,7 +145,7 @@ def build_py_coverage(self) -> None:
                 continue
 
             try:
-                mod = __import__(mod_name, fromlist=['foo'])
+                mod = import_module(mod_name)
             except ImportError as err:
                 logger.warning(__('module %s could not be imported: %s'), mod_name, err)
                 self.py_undoc[mod_name] = {'error': err}
diff --git a/sphinx/ext/inheritance_diagram.py b/sphinx/ext/inheritance_diagram.py
index f52a990bf52..ecb6302d121 100644
--- a/sphinx/ext/inheritance_diagram.py
+++ b/sphinx/ext/inheritance_diagram.py
@@ -38,8 +38,8 @@ class E(B): pass
 import builtins
 import inspect
 import re
-import sys
 from hashlib import md5
+from importlib import import_module
 from typing import Any, Dict, Iterable, List, Tuple
 from typing import cast
 
@@ -74,8 +74,10 @@ def try_import(objname: str) -> Any:
     Returns imported object or module.  If failed, returns None value.
     """
     try:
-        __import__(objname)
-        return sys.modules.get(objname)
+        return import_module(objname)
+    except TypeError:
+        # Relative import
+        return None
     except ImportError:
         matched = module_sig_re.match(objname)
 
@@ -87,8 +89,8 @@ def try_import(objname: str) -> Any:
         if modname is None:
             return None
         try:
-            __import__(modname)
-            return getattr(sys.modules.get(modname), attrname, None)
+            module = import_module(modname)
+            return getattr(module, attrname, None)
         except ImportError:
             return None
 
diff --git a/sphinx/highlighting.py b/sphinx/highlighting.py
index b4e63209fab..977b71f2855 100644
--- a/sphinx/highlighting.py
+++ b/sphinx/highlighting.py
@@ -11,6 +11,7 @@
 import html
 import warnings
 from functools import partial
+from importlib import import_module
 
 from pygments import highlight
 from pygments.filters import ErrorToken
@@ -92,7 +93,7 @@ def get_style(self, stylename):
             return NoneStyle
         elif '.' in stylename:
             module, stylename = stylename.rsplit('.', 1)
-            return getattr(__import__(module, None, None, ['__name__']), stylename)
+            return getattr(import_module(module), stylename)
         else:
             return get_style_by_name(stylename)
 
diff --git a/sphinx/registry.py b/sphinx/registry.py
index f8ee39466d7..3666c758b98 100644
--- a/sphinx/registry.py
+++ b/sphinx/registry.py
@@ -10,6 +10,7 @@
 
 import traceback
 import warnings
+from importlib import import_module
 from inspect import isclass
 from types import MethodType
 
@@ -471,18 +472,19 @@ def load_extension(self, app, extname):
         prefix = __('while setting up extension %s:') % extname
         with prefixed_warnings(prefix):
             try:
-                mod = __import__(extname, None, None, ['setup'])
+                mod = import_module(extname)
             except ImportError as err:
                 logger.verbose(__('Original exception:\n') + traceback.format_exc())
                 raise ExtensionError(__('Could not import extension %s') % extname, err)
 
-            if not hasattr(mod, 'setup'):
+            setup = getattr(mod, 'setup', None)
+            if setup is None:
                 logger.warning(__('extension %r has no setup() function; is it really '
                                   'a Sphinx extension module?'), extname)
                 metadata = {}  # type: Dict[str, Any]
             else:
                 try:
-                    metadata = mod.setup(app)
+                    metadata = setup(app)
                 except VersionRequirementError as err:
                     # add the extension name to the version required
                     raise VersionRequirementError(
diff --git a/sphinx/search/__init__.py b/sphinx/search/__init__.py
index 1b4f7ea5916..22ba14d40d3 100644
--- a/sphinx/search/__init__.py
+++ b/sphinx/search/__init__.py
@@ -11,6 +11,7 @@
 import pickle
 import re
 import warnings
+from importlib import import_module
 from os import path
 
 from docutils import nodes
@@ -278,8 +279,7 @@ def __init__(self, env, lang, options, scoring):
             self.lang = SearchEnglish(options)  # type: SearchLanguage
         elif isinstance(lang_class, str):
             module, classname = lang_class.rsplit('.', 1)
-            lang_class = getattr(__import__(module, None, None, [classname]),
-                                 classname)
+            lang_class = getattr(import_module(module), classname)
             self.lang = lang_class(options)
         else:
             # it's directly a class (e.g. added by app.add_search_language)
diff --git a/sphinx/util/__init__.py b/sphinx/util/__init__.py
index f06720695fb..b75e8003460 100644
--- a/sphinx/util/__init__.py
+++ b/sphinx/util/__init__.py
@@ -22,6 +22,7 @@
 from collections import deque
 from datetime import datetime
 from hashlib import md5
+from importlib import import_module
 from os import path
 from time import mktime, strptime
 from typing import Any, Callable, Dict, IO, Iterable, Iterator, List, Pattern, Set, Tuple
@@ -270,12 +271,10 @@ def get_module_source(modname: str) -> Tuple[str, str]:
     Can return ('file', 'filename') in which case the source is in the given
     file, or ('string', 'source') which which case the source is the string.
     """
-    if modname not in sys.modules:
-        try:
-            __import__(modname)
-        except Exception as err:
-            raise PycodeError('error importing %r' % modname, err)
-    mod = sys.modules[modname]
+    try:
+        mod = import_module(modname)
+    except Exception as err:
+        raise PycodeError('error importing %r' % modname, err)
     filename = getattr(mod, '__file__', None)
     loader = getattr(mod, '__loader__', None)
     if loader and getattr(loader, 'get_filename', None):
@@ -316,8 +315,7 @@ def get_full_modname(modname: str, attribute: str) -> str:
         # Prevents a TypeError: if the last getattr() call will return None
         # then it's better to return it directly
         return None
-    __import__(modname)
-    module = sys.modules[modname]
+    module = import_module(modname)
 
     # Allow an attribute to have multiple parts and incidentially allow
     # repeated .s in the attribute.
@@ -572,14 +570,13 @@ def import_object(objname: str, source: str = None) -> Any:
     try:
         objpath = objname.split('.')
         modname = objpath.pop(0)
-        obj = __import__(modname)
+        obj = import_module(modname)
         for name in objpath:
             modname += '.' + name
             try:
                 obj = getattr(obj, name)
             except AttributeError:
-                __import__(modname)
-                obj = getattr(obj, name)
+                obj = import_module(modname)
 
         return obj
     except (AttributeError, ImportError) as exc:
diff --git a/tests/test_ext_autodoc_mock.py b/tests/test_ext_autodoc_mock.py
index 767232bccf6..5562f47de40 100644
--- a/tests/test_ext_autodoc_mock.py
+++ b/tests/test_ext_autodoc_mock.py
@@ -10,6 +10,7 @@
 
 import abc
 import sys
+from importlib import import_module
 
 import pytest
 
@@ -56,27 +57,27 @@ def test_mock():
     submodule = modname + '.submodule'
     assert modname not in sys.modules
     with pytest.raises(ImportError):
-        __import__(modname)
+        import_module(modname)
 
     with mock([modname]):
-        __import__(modname)
+        import_module(modname)
         assert modname in sys.modules
         assert isinstance(sys.modules[modname], _MockModule)
 
         # submodules are also mocked
-        __import__(submodule)
+        import_module(submodule)
         assert submodule in sys.modules
         assert isinstance(sys.modules[submodule], _MockModule)
 
     assert modname not in sys.modules
     with pytest.raises(ImportError):
-        __import__(modname)
+        import_module(modname)
 
 
 def test_mock_does_not_follow_upper_modules():
     with mock(['sphinx.unknown.module']):
         with pytest.raises(ImportError):
-            __import__('sphinx.unknown')
+            import_module('sphinx.unknown')
 
 
 @pytest.mark.skipif(sys.version_info < (3, 7), reason='Only for py37 or above')

From 4a1df77e33f4d98c936837d8ab3cd750ef251772 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Sun, 18 Aug 2019 22:07:10 +0900
Subject: [PATCH 11/16] Update CHANGES for PR #6419

---
 CHANGES | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGES b/CHANGES
index 5186526eb11..f42ef0ad1d3 100644
--- a/CHANGES
+++ b/CHANGES
@@ -37,6 +37,8 @@ Features added
 * #6533: LaTeX: refactor visit_enumerated_list() to use ``\sphinxsetlistlabels``
 * #6628: quickstart: Use ``https://docs.python.org/3/`` for default setting of
   :confval:`intersphinx_mapping`
+* #6419: sphinx-build: give reasons why rebuilded
+
 
 Bugs fixed
 ----------

From 65e2fdc191f656c35e6add0f33427a7b63cbcafe Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Sun, 18 Aug 2019 23:59:06 +0900
Subject: [PATCH 12/16] Fix #6605: autodoc: crashed when target code contains
 custom method-like objects

---
 CHANGES                | 1 +
 sphinx/util/inspect.py | 7 +++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/CHANGES b/CHANGES
index f42ef0ad1d3..ea50011a20c 100644
--- a/CHANGES
+++ b/CHANGES
@@ -56,6 +56,7 @@ Bugs fixed
   imports when ``'bysource'`` order
 * #6574: autodoc: missing type annotation for variadic and keyword parameters
 * #6589: autodoc: Formatting issues with autodoc_typehints='none'
+* #6605: autodoc: crashed when target code contains custom method-like objects
 * #6498: autosummary: crashed with wrong autosummary_generate setting
 * #6507: autosummary: crashes without no autosummary_generate setting
 * #6511: LaTeX: autonumbered list can not be customized in LaTeX
diff --git a/sphinx/util/inspect.py b/sphinx/util/inspect.py
index 37ad34153c5..2a6c0018e0f 100644
--- a/sphinx/util/inspect.py
+++ b/sphinx/util/inspect.py
@@ -207,9 +207,12 @@ def isbuiltin(obj: Any) -> bool:
 
 def iscoroutinefunction(obj: Any) -> bool:
     """Check if the object is coroutine-function."""
-    if inspect.iscoroutinefunction(obj):
+    if hasattr(obj, '__code__') and inspect.iscoroutinefunction(obj):
+        # check obj.__code__ because iscoroutinefunction() crashes for custom method-like
+        # objects (see https://github.com/sphinx-doc/sphinx/issues/6605)
         return True
-    elif ispartial(obj) and inspect.iscoroutinefunction(obj.func):
+    elif (ispartial(obj) and hasattr(obj.func, '__code__') and
+          inspect.iscoroutinefunction(obj.func)):
         # partialed
         return True
     else:

From 9dd768863c613e00d1f9c33ed1d1fbbdc663cbf9 Mon Sep 17 00:00:00 2001
From: Jakob Lykke Andersen <Jakob@caput.dk>
Date: Fri, 2 Aug 2019 14:45:10 +0200
Subject: [PATCH 13/16] Fix field lists after switch to HTML5 writer

- classic: Put the pink'ish colour back on the field type part (dt).
- basic: remove top margin on the field data to align with the type.
- basic: use grid display instead of flexbox to avoid fixed width on
  the field type part.

Other themes affected/fixed due to changes in basic:
- bizstyle (only technically, it already was fixed in
  sphinx-doc/sphinx#6262)
- haiku
- classic
- nature
- pyramid
- sphinxdoc

Fixes sphinx-doc/sphinx#6604
---
 sphinx/themes/basic/static/basic.css_t       | 11 ++++++-----
 sphinx/themes/bizstyle/static/bizstyle.css_t |  5 -----
 sphinx/themes/classic/static/classic.css_t   |  2 +-
 3 files changed, 7 insertions(+), 11 deletions(-)

diff --git a/sphinx/themes/basic/static/basic.css_t b/sphinx/themes/basic/static/basic.css_t
index 91fd35755cc..1c278e88b8a 100644
--- a/sphinx/themes/basic/static/basic.css_t
+++ b/sphinx/themes/basic/static/basic.css_t
@@ -520,14 +520,15 @@ dl.citation > dd:after {
 }
 
 dl.field-list {
-    display: flex;
-    flex-wrap: wrap;
+    display: grid;
+    grid-template-columns: fit-content(30%) auto;
 }
 
 dl.field-list > dt {
-    flex-basis: 20%;
     font-weight: bold;
     word-break: break-word;
+    padding-left: 0.5em;
+    padding-right: 5px;
 }
 
 dl.field-list > dt:after {
@@ -535,8 +536,8 @@ dl.field-list > dt:after {
 }
 
 dl.field-list > dd {
-    flex-basis: 70%;
-    padding-left: 1em;
+    padding-left: 0.5em;
+    margin-top: 0em;
     margin-left: 0em;
     margin-bottom: 0em;
 }
diff --git a/sphinx/themes/bizstyle/static/bizstyle.css_t b/sphinx/themes/bizstyle/static/bizstyle.css_t
index f2b4006880e..b1ae4968967 100644
--- a/sphinx/themes/bizstyle/static/bizstyle.css_t
+++ b/sphinx/themes/bizstyle/static/bizstyle.css_t
@@ -412,15 +412,10 @@ p.versionchanged span.versionmodified {
 
 dl.field-list > dt {
     color: white;
-    padding-left: 0.5em;
-    padding-right: 5px;
     background-color: #82A0BE;
 }
 
 dl.field-list > dd {
-    padding-left: 0.5em;
-    margin-top: 0em;
-    margin-left: 0em;
     background-color: #f7f7f7;
 }
 
diff --git a/sphinx/themes/classic/static/classic.css_t b/sphinx/themes/classic/static/classic.css_t
index a062d6d14be..84a4dd0ec95 100644
--- a/sphinx/themes/classic/static/classic.css_t
+++ b/sphinx/themes/classic/static/classic.css_t
@@ -292,7 +292,7 @@ code {
     font-size: 0.95em;
 }
 
-th {
+th, dl.field-list > dt {
     background-color: #ede;
 }
 

From 2e9f66b22fe9d0af1c21b42b4d86bb98949a63ad Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 19 Aug 2019 00:22:52 +0900
Subject: [PATCH 14/16] Update CHANGES for PR #6625

---
 CHANGES | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGES b/CHANGES
index ea50011a20c..67f9a212234 100644
--- a/CHANGES
+++ b/CHANGES
@@ -8,6 +8,7 @@ Incompatible changes
 --------------------
 
 * apidoc: template files are renamed to ``.rst_t``
+* html: Field lists will be styled by grid layout
 
 Deprecated
 ----------

From bea7b5d4777d6b1216213b6c58eee0c3d133ca94 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 19 Aug 2019 00:33:00 +0900
Subject: [PATCH 15/16] Bump to 2.2.0 final

---
 CHANGES            | 32 ++------------------------------
 sphinx/__init__.py |  4 ++--
 2 files changed, 4 insertions(+), 32 deletions(-)

diff --git a/CHANGES b/CHANGES
index 67f9a212234..8b1eb36bc6b 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,8 +1,5 @@
-Release 2.2.0 (in development)
-==============================
-
-Dependencies
-------------
+Release 2.2.0 (released Aug 19, 2019)
+=====================================
 
 Incompatible changes
 --------------------
@@ -40,7 +37,6 @@ Features added
   :confval:`intersphinx_mapping`
 * #6419: sphinx-build: give reasons why rebuilded
 
-
 Bugs fixed
 ----------
 
@@ -75,30 +71,6 @@ Bugs fixed
 * #6474: ``DocFieldTransformer`` raises AttributeError when given directive is
   not a subclass of ObjectDescription
 
-Testing
---------
-
-Release 2.1.3 (in development)
-==============================
-
-Dependencies
-------------
-
-Incompatible changes
---------------------
-
-Deprecated
-----------
-
-Features added
---------------
-
-Bugs fixed
-----------
-
-Testing
---------
-
 Release 2.1.2 (released Jun 19, 2019)
 =====================================
 
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index 57b3d606207..3c773fd3224 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -32,7 +32,7 @@
 warnings.filterwarnings('ignore', "'U' mode is deprecated",
                         DeprecationWarning, module='docutils.io')
 
-__version__ = '2.2.0+'
+__version__ = '2.2.0'
 __released__ = '2.2.0'  # used when Sphinx builds its own docs
 
 #: Version info for better programmatic use.
@@ -43,7 +43,7 @@
 #:
 #: .. versionadded:: 1.2
 #:    Before version 1.2, check the string ``sphinx.__version__``.
-version_info = (2, 2, 0, 'beta', 0)
+version_info = (2, 2, 0, 'final', 0)
 
 package_dir = path.abspath(path.dirname(__file__))
 

From 63757596b14991801ce09d1ac9bff425715e0c40 Mon Sep 17 00:00:00 2001
From: Takeshi KOMIYA <i.tkomiya@gmail.com>
Date: Mon, 19 Aug 2019 00:35:51 +0900
Subject: [PATCH 16/16] Bump version

---
 CHANGES            | 21 +++++++++++++++++++++
 sphinx/__init__.py |  6 +++---
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/CHANGES b/CHANGES
index 8b1eb36bc6b..c31333857ae 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,24 @@
+Release 2.3.0 (in development)
+==============================
+
+Dependencies
+------------
+
+Incompatible changes
+--------------------
+
+Deprecated
+----------
+
+Features added
+--------------
+
+Bugs fixed
+----------
+
+Testing
+--------
+
 Release 2.2.0 (released Aug 19, 2019)
 =====================================
 
diff --git a/sphinx/__init__.py b/sphinx/__init__.py
index 3c773fd3224..efdf0845783 100644
--- a/sphinx/__init__.py
+++ b/sphinx/__init__.py
@@ -32,8 +32,8 @@
 warnings.filterwarnings('ignore', "'U' mode is deprecated",
                         DeprecationWarning, module='docutils.io')
 
-__version__ = '2.2.0'
-__released__ = '2.2.0'  # used when Sphinx builds its own docs
+__version__ = '2.3.0+'
+__released__ = '2.3.0'  # used when Sphinx builds its own docs
 
 #: Version info for better programmatic use.
 #:
@@ -43,7 +43,7 @@
 #:
 #: .. versionadded:: 1.2
 #:    Before version 1.2, check the string ``sphinx.__version__``.
-version_info = (2, 2, 0, 'final', 0)
+version_info = (2, 3, 0, 'beta', 0)
 
 package_dir = path.abspath(path.dirname(__file__))