Merge tag '0.14' into develop

v0.14
Added some more comments
Added docstring
Added supported languages
Make test runnable
Whitespace
Added tests for extend
Aligned pausable_buffered with RxJS
Aligned backpressure with RxJS
More fixes for backpressure
Renamed select to map and where to filter
Renamed select to map and where to filter
Updated changes
Whitespace
Added python slicing
Bugfix to handle falsy elements
Comments
Merge branch 'feature/pythonic' into develop
Allow step to be 1
Removed from_array. from_ is now a alias