Merge branch 'release/0.3.0'

* release/0.3.0:
  first public release
  initial implementation
Merge branch 'release/0.3.1'

* release/0.3.1:
  version bumped to 0.3.1
  fixed markdown formating for github
Merge branch 'release/0.4.0'

* release/0.4.0:
  bumped version 0.4.0
  implemented --pretend option
  fixed tests failed silently
  removed previous required parameters to get-version
  recursive configuration logic
Merge branch 'release/0.4.1'

* release/0.4.1:
  bumped version to 0.4.1
  updated documentation with usage
Merge branch 'release/0.4.2'

* release/0.4.2:
  bumped version to 0.4.2
  bugfix: usage docs were conflicting with tests
bumps to 0.4.3
Merge branch 'release/0.4.3'

* release/0.4.3:
  bumps to 0.4.3
  Honor $VERSION_FILE
Merge tag '0.4.3' into develop

smallfix

* tag '0.4.3':
  bumps to 0.4.3