Make crypto module python3-compatible
* Remove usage of unicode() and decode the base64-encoded string in
encrypt();
* Encode the string received in decrypt() as (I supposed) it should come
from the result of encrypt().
Add tests for this module along the way.
version=3
opts=uversionmangle=s/(rc|a|b|c)/~$1/ \
https://pypi.debian.net/cubicweb/cubicweb-(.+)\.(?:zip|tgz|tbz|txz|(?:tar\.(?:gz|bz2|xz)))