Merge pull request #433 from philipc/release

Release 0.19.0

Merge pull request #421 from philipc/release

Release 0.18.0

Merge pull request #388 from philipc/release

Release 0.17.0

Merge pull request #321 from philipc/bump-version

Bump to 0.16.1

Merge pull request #304 from fitzgen/bump-to-0.16.0

Bump to 0.16.0

Merge pull request #264 from fitzgen/bump-to-0.15.0

Bump to version 0.15.0

Merge pull request #232 from philipc/ver

Bump to version 0.14.0

Merge pull request #191 from fitzgen/bump-to-0.13.0

Bump to version 0.13.0

Bump version to 0.12.0

Bump to version 0.11.0