update changelog and package.json version
Merge pull request #950 from andrerod/dev

Fix account clear reference issue and add UT
Merge pull request #951 from andrerod/dev

Fix incorrect reference in interaction
fix passwordOnce reference
Update version
Merge pull request #941 from WindowsAzure/release-0.7.2

Release 0.7.2
Merge pull request #977 from WindowsAzure/master

Merge master back to dev