Merge branch 'develop'

Merge remote-tracking branch 'remotes/origin/master' into develop

Merge pull request ActiDoo#27 from ActiDoo/develop

Fix for several test cases

Changelog for version 0.2.1

Merge pull request ActiDoo#25 from ActiDoo/develop

Deploy version 0.2.0

fix typo

readme additions and new version

correct version import in docs

update version

add raven (logging with sentry)