Merge pull request #305 from vizzuhq/lib Changed: set Vizzu's version to 0.16.x

Merge pull request #292 from vizzuhq/release-0.17.0 changed: set version to 0.17.0

Merge pull request #279 from vizzuhq/version changed: set version to 0.16.2

Merge pull request #269 from vizzuhq/version changed: set version to 0.16.1

Set version to 0.16.0 

setup.py: version 0.15.0 

setup.py: version 0.14.0 

setup.py: version 0.13.0 

setup.py: version 0.12.1 

setup.py: version 0.12.0