Add web-animations.vim

See also: http://www.w3.org/TR/web-animations/

after/syntax/css/web-animations.vim

@@ -0,0 +1 @@
+" N/A

after/syntax/html.vim

@@ -57,3 +57,4 @@ syn include @htmlCss syntax/css/html5-elements.vim
 syn include @htmlCss syntax/css/motion-1.vim
 syn include @htmlCss syntax/css/selectors-nonelement-1.vim
 syn include @htmlCss syntax/css/selectors4.vim
+syn include @htmlCss syntax/css/web-animations.vim

test/test.css

@@ -670,6 +670,10 @@
   user-zoom: auto;
 }
 
+.web-animations {
+  display: auto;
+}
+
 .will-change {
   will-change: scroll-position;
 }

test/test.html

@@ -736,6 +736,11 @@
 }
 </style>
 <style>
+.web-animations {
+  display: auto;
+}
+</style>
+<style>
 .will-change {
   will-change: scroll-position;
 }