Use single underscore for private methods
Merge tag '0.10.3' into develop

v0.10.3
Removed debug print
Only update state if other than None
Cleanup, indentation etc
Fixed docstring
Merge branch 'develop' of https://github.com/dbrattli/RxPY into develop
Make amb thread safe
Merge branch 'develop' of github.com:ReactiveX/RxPY into develop
Whitespace cleanup
Merge
Merge
Added some pythonic versions of operators
Make coldobservable work with other schedulers
Merge branch 'develop' into feature/marbles
Better time handling
Make disposables support context management protocol
Convert to/from marble strings
__len__ should return int
Merge branch 'feature/pythonic' into develop