Added

• Support "plain" Redis as a cache store backend (#280). Thanks @bfad and @ryandv.
• When overwriting Rack::Attack.throttled_response you can now access the exact epoch integer that was used for caching so your custom code is less prone to race conditions (#282). Thanks @doliveirakn.

Dependency changes

• Explictly declare ancient rack 0.x series as incompatible in gemspec