Merge tag '0.2' into develop

0.2

* tag '0.2':
  bump version number
Merge tag '0.2.1' into develop

0.2.1

* tag '0.2.1':
  fix requirements and bump version number
fix import
bump version number
Merge branch 'release/0.2.2'

* release/0.2.2:
  bump version number
  fix import