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.

[bdist_wheel]
universal = 1

[check-manifest]
ignore =
  debian
  debian/*
  cubicweb.spec
  __pkginfo__.py