Regenerate

* New global attributes: `is`, `slot`.
* New element: `slot`, with attributes: `name`;
* New on `a`, `area`, `iframe`, `img`, `link`: `referrerpolicy`;
* New on `iframe`: `allowusermedia`;
* New on `link`, `script`: `integrity`;
* New on `link`: `as`, nonce`;
* New on `video`: `playsinline`.

index.json

@@ -9,12 +9,14 @@
     "dropzone",
     "hidden",
     "id",
+    "is",
     "itemid",
     "itemprop",
     "itemref",
     "itemscope",
     "itemtype",
     "lang",
+    "slot",
     "spellcheck",
     "style",
     "tabindex",
@@ -109,6 +111,7 @@
     "hreflang",
     "name",
     "ping",
+    "referrerpolicy",
     "rel",
     "rev",
     "shape",
@@ -123,6 +126,7 @@
     "hreflang",
     "nohref",
     "ping",
+    "referrerpolicy",
     "rel",
     "shape",
     "target",
@@ -185,12 +189,14 @@
   "iframe": [
     "align",
     "allowfullscreen",
+    "allowusermedia",
     "frameborder",
     "height",
     "longdesc",
     "marginheight",
     "marginwidth",
     "name",
+    "referrerpolicy",
     "sandbox",
     "scrolling",
     "src",
@@ -207,6 +213,7 @@
     "ismap",
     "longdesc",
     "name",
+    "referrerpolicy",
     "sizes",
     "src",
     "srcset",
@@ -325,11 +332,15 @@
     "vlink"
   ],
   "link": [
+    "as",
     "charset",
     "crossorigin",
     "href",
     "hreflang",
+    "integrity",
     "media",
+    "nonce",
+    "referrerpolicy",
     "rel",
     "rev",
     "sizes",
@@ -341,6 +352,7 @@
     "charset",
     "crossorigin",
     "defer",
+    "integrity",
     "language",
     "nonce",
     "src",
@@ -497,6 +509,7 @@
     "loop",
     "mediagroup",
     "muted",
+    "playsinline",
     "poster",
     "preload",
     "src",
@@ -568,5 +581,8 @@
   ],
   "dialog": [
     "open"
+  ],
+  "slot": [
+    "name"
   ]
 }