Cut version 0.12.0

Also fixed a small typo in the CHANGELOG.

Change-Id: I29794ca5b5159e2597e11d0f6bb130159abfcd24
Reviewed-on: https://gerrit.causes.com/30694
Tested-by: jenkins <jenkins@causes.com>
Reviewed-by: Joe Lencioni <joe.lencioni@causes.com>