All Encrypt/Decrypt Cipher implementations will now take
and return []byte to set up usage in future binary compatible
encoding schemes to fix issues with bloat encrypting to strings
(which requires base64ing adding 33% size)
* Refactor the utils package to other areas
Move cookieSession functions to cookie session store
& align the double implementation of SecretBytes to be
united and housed under encryption
* Remove unused Provider SessionFromCookie/CookieForSession
These implementations aren't used, these are handled in the cookie store.
* Add changelog entry for session/utils refactor
Nick Meves
Joel Speed