Update web_components pubspec and release a new version.

Update web_components pubspec and release a new version.

R=jmesserly@google.com

Committed: https://code.google.com/p/dart/source/detail?r=36181

[Jennifer Messerly, 2014-05-14 17:56:31]

https://codereview.chromium.org/278823007/diff/1/pkg/web_components/pubspec.yaml
File pkg/web_components/pubspec.yaml (right):

https://codereview.chromium.org/278823007/diff/1/pkg/web_components/pubspec.y...
pkg/web_components/pubspec.yaml:13: sdk: ">=1.4.0-dev.6.6 <2.0.0"
did the relevant dart2js changes get cherry picked into trunk for 1.4? otherwise
would this need to say 1.5?

[Siggi Cherem (dart-lang), 2014-05-14 17:58:45]

On 2014/05/14 17:56:31, John Messerly wrote:
>
https://codereview.chromium.org/278823007/diff/1/pkg/web_components/pubspec.yaml
> File pkg/web_components/pubspec.yaml (right):
> 
>
https://codereview.chromium.org/278823007/diff/1/pkg/web_components/pubspec.y...
> pkg/web_components/pubspec.yaml:13: sdk: ">=1.4.0-dev.6.6 <2.0.0"
> did the relevant dart2js changes get cherry picked into trunk for 1.4?
otherwise
> would this need to say 1.5?

Yep, they actually did. Here is the patch that cherry-picked it:
https://code.google.com/p/dart/source/detail?r=36146

[Jennifer Messerly, 2014-05-14 18:03:25]

awesome, lgtm then!

[Siggi Cherem (dart-lang), 2014-05-14 18:14:56]

Committed patchset #1 manually as r36181 (presubmit successful).