- BREAKING CHANGE: @hmac.auth decorator now needs to be called as @hmac.auth()
- New only argument for @hmac.auth() to only allow specific clients access
- Swaps urlsafe_b64encode for b64encode
- Support multiple keys
- Able to change secret key in make_hmac method
- Method validate_signature created which can be used outside of Hmac class
- Custom exceptions
- Initial release including the core feature set