Go to python3

Just a post, to mark the day I dive into python3 ;-)

It takes long times, but now ; I'm with it ;-)

reqman was the first !

It was hard to dive into bytes/str(unicode), coming from the str(bytes)/unicode world ... but it's definitivly simpler in all cases ! My main tools are fully support py3 (bottle, app engine, ...)

My "aed" thing will be the next ...