added doc for page size
improved docs of R.Write.Unsafe
removed trailing spaces in R.System.Parametes
CryptoMode initial design. Added Digestible class.
Using CryptoMode instead of Direction in Raaz.Primitives.Cipher
Using EncryptMode and DecryptMode in raaz-cipher
Fixed raaz-cipher tests
Fixed raaz-cipher benchmarks
Added Encrypt instances for salsa and AES
Fixed warning in Salsa20.Instances
Got rid of HasInverse in raaz-primitives
Added CryptoSerialize
Now using CryptoSerialize for parsing from ByteString.
Removed HasInverse and Initializable instances from raaz-cipher
Fixed raaz-cipher tests
Fixed raaz-cipher benchmarks
Fixed raaz-random
Added Diestible constraint to Hash class
Added Digestible instances for hashes
verifyCxt takes `Digest (prim AuthMode)` instead of `prim VerifyMode`.