Fixed output redirection with special ipython and jupyter notebook su…

…pport

Fixed Linux integer overflow bug with ETA

Bumped version for pypi

Fixed strange git undo

improved test coverage v3.9.1

Finished ETA widgets

modernized the package and improved python 3 support

added more widgets, dropped python 2.6 support and improved testing

fixed jupyter notebook, last update and negative ETA bugs thanks to @…

…zzzsochi v3.6.1

Fixed progressbar on Windows consoles