1.4.0

Features

• Easier extending/replacing of key algorithms
• Note explicit support for Python 3.5 and 3.6
• Implement cryptography as one of the backends

Fixes

• Fix for cryptography 1.9
• Fix for CVE-2017-11424

1.3.2

Bugfixes

• Use constant time string comparisons for HMAC keys

1.3.1

Bugfixes

• Handle errors with lists of keys

1.3.0

New Features

• Support for Firebase certs

1.2.0

New Features

• Allows multiple values for 'iss'

1.1.0

New Features

• Support for JWK sets
• Support for at_hash verification
• Minor documentation updates

1.0.0

JWK Support

JWKs are now supported as first class objects.

JWK Improvements

0.7.0

Fixes

• Remove builtins dependency which broke AppEngine support

0.6.2

New features

• Allow users to validate a specific subject

0.6.1

Fix missing future dependency for python2.

My apologies for breaking 0.6.0.