Brigade Bitbucket Gateway 0.12.0

This creates better structured Revision structs to send to the Brigade core api.

Also removes support for a couple of BitBucket events, Repo Fork and Updated.

Brigade Bitbucket Gateway 0.11.0

Updates to the Bitbucket API packages and latest dependencies.

Brigade Bitbucket Gateway 0.10.0

Updates to support Brigade Core versions 0.10.0+

Implements all Bitbucket events.

Improved documents.