[css mode] Add properties for CSS regions

mode/css/css.js

@@ -366,9 +366,9 @@ CodeMirror.defineMode("css-base", function(config, parserConfig) {
     "drop-initial-before-align", "drop-initial-size", "drop-initial-value",
     "elevation", "empty-cells", "fit", "fit-position", "flex", "flex-basis",
     "flex-direction", "flex-flow", "flex-grow", "flex-shrink", "flex-wrap",
-    "float", "float-offset", "font", "font-feature-settings", "font-family",
-    "font-kerning", "font-language-override", "font-size", "font-size-adjust",
-    "font-stretch", "font-style", "font-synthesis", "font-variant",
+    "float", "float-offset", "flow-into", "flow-from", "font", "font-feature-settings",
+    "font-family", "font-kerning", "font-language-override", "font-size",
+    "font-size-adjust", "font-stretch", "font-style", "font-synthesis", "font-variant",
     "font-variant-alternates", "font-variant-caps", "font-variant-east-asian",
     "font-variant-ligatures", "font-variant-numeric", "font-variant-position",
     "font-weight", "grid-cell", "grid-column", "grid-column-align",
@@ -393,8 +393,8 @@ CodeMirror.defineMode("css-base", function(config, parserConfig) {
     "perspective-origin", "pitch", "pitch-range", "play-during", "position",
     "presentation-level", "punctuation-trim", "quotes", "rendering-intent",
     "resize", "rest", "rest-after", "rest-before", "richness", "right",
-    "rotation", "rotation-point", "ruby-align", "ruby-overhang",
-    "ruby-position", "ruby-span", "size", "speak", "speak-as", "speak-header",
+    "rotation", "rotation-point", "ruby-align", "ruby-overhang", "ruby-position",
+    "ruby-span", "shape-inside", "shape-outside", "size", "speak", "speak-as", "speak-header",
     "speak-numeral", "speak-punctuation", "speech-rate", "stress", "string-set",
     "tab-size", "table-layout", "target", "target-name", "target-new",
     "target-position", "text-align", "text-align-last", "text-decoration",
@@ -504,8 +504,8 @@ CodeMirror.defineMode("css-base", function(config, parserConfig) {
     "narrower", "ne-resize", "nesw-resize", "no-close-quote", "no-drop",
     "no-open-quote", "no-repeat", "none", "normal", "not-allowed", "nowrap",
     "ns-resize", "nw-resize", "nwse-resize", "oblique", "octal", "open-quote",
-    "optimizeLegibility", "optimizeSpeed", "oriya", "oromo", "outset",
-    "outside", "overlay", "overline", "padding", "padding-box", "painted",
+    "optimizeLegibility", "optimizeSpeed", "oriya", "oromo", "outset", "outside",
+    "outside-shape", "overlay", "overline", "padding", "padding-box", "painted",
     "paused", "persian", "plus-darker", "plus-lighter", "pointer", "portrait",
     "pre", "pre-line", "pre-wrap", "preserve-3d", "progress", "push-button",
     "radio", "read-only", "read-write", "read-write-plaintext-only", "relative",