Removed some unnecessary references to PyCrypto's Crypto.Hash functions in the ECDSA code since it uses hashlib functions anyways. This removes an ECDSA dependency on PyCrypto.
Removed some unnecessary references to PyCrypto's Crypto.Hash functions in the ECDSA code since it uses hashlib functions anyways. This removes an ECDSA dependency on PyCrypto.

jpadilla/pyjwt,Wolfium/pyjwt,jmgamboa/pyjwt,progrium/pyjwt,mark-adams/pyjwt,mindw/pyjwt,rainierwolfcastle/pyjwt