Add the "integrity" attribute

Fixes validator#151

schema/html5/common.rnc

@@ -390,6 +390,10 @@ common.attrs.other =
 	common.data.source.size.list =
 		w:source-size-list
 
+## Subresource Integrity
+	common.data.integrity =
+		string
+
 ## Microdata Properties
   common.data.microdata-properties =
     list { w:microdata-property+ }

schema/html5/core-scripting.rnc

@@ -15,6 +15,7 @@ datatypes w = "http://whattf.org/datatype-draft"
 		(	common.attrs
 		&	script.attrs.type?
 		&	script.attrs.language? # restricted in Schematron
+		&	script.attrs.integrity?
 		&	embedded.content.attrs.crossorigin?
 		&	(	common.attrs.aria.role.presentation
 			|	common.attrs.aria.role.menuitem
@@ -30,6 +31,7 @@ datatypes w = "http://whattf.org/datatype-draft"
 		&	script.attrs.type?
 		&	script.attrs.charset?
 		&	script.attrs.language? # restricted in Schematron
+		&	script.attrs.integrity?
 		&	embedded.content.attrs.crossorigin?
 		&	(	common.attrs.aria.role.presentation
 			|	common.attrs.aria.role.menuitem
@@ -59,6 +61,10 @@ datatypes w = "http://whattf.org/datatype-draft"
 			attribute language {
 				string
 			}
+		script.attrs.integrity =
+			attribute integrity {
+				common.data.integrity
+			}
 	script.inner.embedded =
 		( common.inner.anything )
 	script.inner.imported =

schema/html5/meta.rnc

@@ -159,6 +159,7 @@ datatypes w = "http://whattf.org/datatype-draft"
 		&	common.attrs.other
 		&	link.attrs.href
 		&	link.attrs.rel
+		&	link.attrs.integrity?
 		&	shared-hyperlink.attrs.hreflang?
 		&	shared-hyperlink.attrs.media?
 		&	shared-hyperlink.attrs.type?
@@ -178,6 +179,10 @@ datatypes w = "http://whattf.org/datatype-draft"
 			attribute rel {
 				w:link-rel
 			}
+		link.attrs.integrity =
+			attribute integrity {
+				common.data.integrity
+			}
 		link.attrs.sizes =
 			attribute sizes {
 				w:string "any" | common.data.sizes