Merge pull request mozilla#619 from mozilla/prepare-2.2.0

Preparing 2.2.0 release

Back to development

Merge branch 'prepare-2.1.0'

Merge pull request mozilla#497 from mozilla/prepare-2.0.0

Preparing 2.0.0 release

Merge pull request mozilla#443 from mozilla/prepare-1.9.0

Prepare Release 1.9.0

Merge pull request mozilla#249 from mozilla/prepare-1.8.0

Release 1.8.0

Add release steps. (mozilla#212)

* Add release steps.

* @vladikoff review.

Merge branch 'prepare-1.7.0'

Release 1.4

Add back metrics.