Change to base hashtype from Rijk Stofberg: add optional param 'hash' to allow creating a new object using a value known a priori.
Change to base hashtype from Rijk Stofberg: add optional param 'hash' to allow creating a new object using a value known a priori.

reubano/changanya,sangelone/python-hashes,reubano/changanya,nickmilon/python-hashes