Animated and smart Progress Bar for python.

Ever found yourself in a remote ssh session, doing some lengthy operations,
and every now and then you feel the need to hit [enter] just to ensure you
didn't lose the connection? Ever wondered where your processing is in, and
when will it finish? Ever needed to pause the progress bar for a while,
return to the python REPL for a manual inspection or fixing an item, and
then resume the process like it never happened? I did...
