Merge pull request #300 from gcheng/dev

Dev
Updating version number to 0.4.2
Merge pull request #302 from jcookems/dev

Updating version number to 0.4.2
Merge pull request #304 from gcheng/dev

Dev
Merge pull request #312 from gcheng/dev

Dev
Merge pull request #319 from gcheng/dev

Implementation of rebind content key.
Merge pull request #321 from gcheng/dev

Dev
Merge pull request #32 from WindowsAzure/dev

Dev