support multiple entry points and only html entry points

CHANGELOG.md

+## 0.4.0
+
+Lots of transformer updates:
+
+* The `new_entry_point` option is gone. The bootstrapped file will now always
+just be the original name but `.dart` will be replaced with `.initialize.dart`.
+* The `html_entry_point` option is gone, and the file extension is now used to
+detect if it is an html or dart file. You should no longer list the dart file
+contained in the html file. Effectively resolves
+[13](https://github.com/dart-lang/initialize/issues/13).
+* The `entry_point` option has been renamed `entry_points` and now accepts
+either a single file path or list of file paths. Additionally, it now supports
+Glob syntax so many files can be selected at once. Resolves
+[19](https://github.com/dart-lang/initialize/issues/19).
+
 ## 0.3.1
 
 * Added `InitializePluginTransformer` class in `plugin_transformer.dart` which
 provides a base transformer class which can be extended to perform custom
 transformations for annotations. These transformers should be included after the
 main `initialize` transformer and work by parsing the bootstrap file so the
 program doesn't need to be re-analyzed.
 
 ## 0.3.0
 
 * Library initializers now pass a `LibraryIdentifier` to `initialize` instead of
 just a `Symbol`. This provides the package and path to the library in addition
 to the symbol so that paths can be normalized.
 
 ## 0.2.0
 
 * `entryPoint` and `newEntryPoint` transformer options were renamed to
 `entry_point` and `new_entry_pont`.
 
 * Added `html_entry_point` option to the transformer. This will search that file
 for any script tag whose src is `entry_point` and rewrite it to point at the
 bootstrapped file `new_entry_point`.
 
 * Top level properties and static class properties are now supported in
 initializer constructors, as well as List and Map literals,
 [5](https://github.com/dart-lang/initialize/issues/5).
 
-
 ## 0.1.0+1
 
 Quick fix for the transformer on windows.
 
 ## 0.1.0
 
 Initial beta release. There is one notable missing feature in the release
 regarding constructor arguments, see
 [5](https://github.com/dart-lang/initialize/issues/5).