Dependency version of html5lib is incompatible with Polymer

[stevenroose]

Look here
https://github.com/dart-lang/polymer-dart/blob/master/pubspec.yaml
and here
https://github.com/angular/angular.dart/blob/master/pubspec.yaml

When depending on both Angular and Polymer, makes pub get two random old versions that happen to have matching browser dependency.
There should be a way to resolve this dependency issues. What's wrong with using html5lib: any?
Or alternatively monitor all dependencies for new versions and test the library against the new version and then update.

[stevenroose]

In addition to html5lib:

Incompatible version constraints on args:
- angular 1.0.0 depends on version >=0.10.0 <0.11.0
- polymer 0.14.3 depends on version >=0.11.0 <0.13.0

[rkirov]

should be good now