Adds @HtmlImport with both dynamic and transformer based implementations. Still need an HtmlInliner…

CHANGELOG.md

+#### 0.10.2-dev
+  * Added the `HtmlImport` annotation. This can be added to any library
+    declaration and it will inject an html import to the specified path into the
+    head of the current document, which allows dart files to declare their html
+    dependencies. Paths can be relative to the current dart file or they can be
+    in `package:` form.
+
+    *Note*: Html imports included this way cannot contain dart script tags. The
+    mirror based implementation injects the imports dynamically and dart script
+    tags are not allowed to be injected in that way.
+
+    There is also a transformer supplied which will inline these imports into
+    the head of your document at compile time, it can be used like this:
+
+      transformers:
+      # Must include the `initialize` transformer first.
+      - initialize:
+          entry_point: web/index.dart
+          html_entry_point: web/index.html
+      - web_components/build/html_import_annotation_inliner:

[Siggi Cherem (dart-lang), 2015/02/12 16:49:44]

maybe we should provide a second transformer:
 - html_initialize

that combines what initialize + html_import_annotation_inliner do.

If a user depends on initialize on their own, they can use this form you present
here, but if they don't, they can do everything with a single transformer.

WDYT?

[jakemac, 2015/02/12 17:04:09]

In the new version of this stuff there will only be a web_components
transformer, which itself calls the initialize transformer (with an html imports
plugin).

+          # The bootstrap file created by the `initialize` transformer.
+          bootstrap_file: test/index.bootstrap.dart
+          html_entry_point: test/index.html
+
 #### 0.10.1
   * Added the `CustomElementProxy` annotation. This can be added to any class
     which proxies a javascript custom element and is the equivalent of calling
     `registerDartType`. In order to use this you will need to be using the
     `initialize` package, and call its `run` method from your main function. It
     is also recommended that you include the transformer from that package to
     remove the use of mirrors at runtime, see
     [initialize](https://github.com/dart-lang/initialize) for more information.
 
 #### 0.10.0
@@ skipping 75 matching lines @@
   * Reverts back to what we had in 0.3.4. (The platform.js updates in 0.3.5 had
     breaking changes so we are republishing it in 0.4.0)
 
 #### 0.3.5
   * Added `registerDartType` to register a Dart API for a custom-element written
     in Javascript.
   * Updated to platform 0.3.3-29065bc
 
 #### 0.3.4
   * Updated to platform 0.2.4 (see lib/build.log for details)