Merge pull request #96 from jjgrainger/release/v2.2.1

Release v2.2.1

Merge pull request #82 from jjgrainger/release/v2.2

Release v2.2

Merge pull request #65 from jjgrainger/release/v2.1

Release v2.1

Merge pull request #21 from jjgrainger/v2.0.1

V2.0.1

Merge pull request #18 from jjgrainger/rc-v2.0

add badges to readme

Merge branch 'rc-v1.1.1'

Merge branch 'rc-v1.1'

initial commit