Implement CanonicalizeRequest.from_import (#41)

See sass/sass#3055
See webpack-contrib/sass-loader#905
See sass/embedded-protocol#61

CHANGELOG.md

@@ -1,3 +1,4 @@
 ## 1.0.0-beta.8
 
-* Internal changes only.
+* Support version 1.0.0-beta.11 of the Sass embedded protocol:
+  * Set CanonicalizeRequest.from_import.

lib/src/importer.dart

@@ -29,7 +29,8 @@ class Importer extends sass.Importer {
           .sendCanonicalizeRequest(OutboundMessage_CanonicalizeRequest()
             ..compilationId = _compilationId
             ..importerId = _importerId
-            ..url = url.toString());
+            ..url = url.toString()
+            ..fromImport = fromImport);
 
       switch (response.whichResult()) {
         case InboundMessage_CanonicalizeResponse_Result.url:

pubspec.yaml

@@ -14,7 +14,7 @@ dependencies:
   async: ">=1.13.0 <3.0.0"
   meta: ^1.1.0
   protobuf: ^2.0.0
-  sass: ^1.25.0
+  sass: ^1.33.0
   source_maps: ^0.10.5
   source_span: ^1.1.0
   stack_trace: ^1.6.0