Merge pull request #1 from Polymer/master

5/14 master -> stable
Merge pull request #2 from Polymer/master

5/15 master -> stable
Merge pull request #4 from Polymer/master

6/5 master -> stable
Merge pull request #5 from Polymer/master

6/17 master -> stable
Merge pull request #10 from Polymer/master

7/11 master -> stable
Merge branch 'stable'