Merge tag 'v0.1.0' into develop

making release v0.1.0

quite stable
improved session handling
no pads visible message
Merge branch 'no_pads_message' into feature/no_pads_message
Merge branch 'feature/no_pads_message' into develop
cleanup
Merge branch 'feature/session_fix' into develop
added version.rb for version numbering
bumped version
Merge branch 'release/0.2.0'