Release v1.8.1

Release v1.8.0

Release v1.7.1

Release 1.7.0

Release 1.6.0

Re-tagging 1.5.5

Re-tagging 1.5.4

Re-tagging 1.5.3

1.5.2 - 2018-08-15

Merge pull request #161 from travis-ci/dj-fix-1.5.1

Update gimme hardcoded version to v1.5.1