fix script tags -- remove special case handling for polymer-element

pkg/polymer/pubspec.yaml

Index: pkg/polymer/pubspec.yaml
diff --git a/pkg/polymer/pubspec.yaml b/pkg/polymer/pubspec.yaml
index 27c068997a5f9838a0ea471a4b0220693193b6d5..ab6bad809efaaa002f3ec6ae5e2605d5265eba6a 100644
--- a/pkg/polymer/pubspec.yaml
+++ b/pkg/polymer/pubspec.yaml
@@ -1,5 +1,5 @@
 name: polymer
-version: 0.9.1
+version: 0.9.1-dev
 author: Polymer.dart Authors <web-ui-dev@dartlang.org>
 description: >
   Polymer.dart is a new type of library for the web, built on top of Web
@@ -13,10 +13,10 @@ dependencies:
   browser: ">=0.9.0 <0.10.0"
   csslib: ">=0.9.0 <0.10.0"
   custom_element: ">=0.9.0 <0.10.0"
-  html5lib: ">=0.9.0 <0.10.0"
+  html5lib: ">=0.9.1-dev <0.10.0"
   html_import: ">=0.9.0 <0.10.0"
   logging: ">=0.9.0 <0.10.0"
-  observe: ">=0.9.1 <0.10.0"
+  observe: ">=0.9.1-dev <0.10.0"
   path: ">=0.9.0 <0.10.0"
   polymer_expressions: ">=0.9.0 <0.10.0"
   shadow_dom: ">=0.9.0 <0.10.0"