1.6.3 (2017-10-21)

• Fix various operations when USE_TZ is True.

• Email addresses are now independently validated by validate_email. cryptography 2.1 no longer validates email addresses itself.

• Require cryptography>=2.1. Older versions should not be broken, but the output changes breaking doctests, meaning they’re no longer tested either.

• CA keys are no longer stored with colons in their filename, fixing init_ca under Windows.