Release 2.12.1

Release 2.12.0

Release 2.11.1

Release 2.11.0

Release 2.10.0

Release 2.9.1

Release 2.9.0

Release 2.8.0

Released v2.6.0

Announcements:

* Anthony Sottile (@asottile) joined the team as a core developer. 🎉

Changes:

* E306: fix detection inside ``async def``.  PR #929.
* E301: fix regression disallowing decorated one-liners.  PR #927.
* E714: fix false positive with chained ``is not``.  PR #931.