CryptSuite work.
OFB mode implementation complete.
Completed tests for all supported suites.
README.md update.
Merged from master.
CAST5 passes test vectors
Added decryption support.
CAST5 work
CAST5 work.
Updated CAST5 tests to use proper key.  Docs update.
CAST6 work.
CAST6 complete.  Need to add testing.
CAST6 work.
CAST6 complete.
Docs update.
Merge from master.