Merge pull request hubotio#1035 from github/release-2.16.0

Release 2.16.0

Merge pull request hubotio#1030 from github/release-v2.15.0

Prepare for v2.15.0 release

Merge pull request hubotio#1016 from github/release-v2.14.0

Prepare for v2.14.0 release

Merge pull request hubotio#981 from github/release-v2.13.2

Prepare for v2.13.2 release

Merge pull request hubotio#969 from github/release-2.13.1

Prepare for 2.13.1 release

Merge pull request hubotio#964 from github/release-v2.13.0

Release v2.13.0

Merge pull request hubotio#915 from github/release-2.12.0

Prepare for v2.12.0

Fix 2.11.4 changelog heading

Merge pull request hubotio#885 from github/release-2.11.3

Release 2.11.3

Merge pull request hubotio#876 from github/release-2.11.2

Prepare for 2.11.2