- json format: to_s all values.
- Added minimum ruby version (2.0.0) to gemspec
- added license to gemspec
- BREAKING: keyword arguments for HmacChecker.new
- Allow nested hashes/arrays to be signed.
- Add :json message_format to sign a sorted json string, instead of just values.
- Added HmacChecker#with_signature which returns the given hash with the HMAC merged in.
- Raise error when insecure key is being used, assuming all keys are hex values (see rfc2104)
- Only compatible with ruby 2