Update CHANGES.
Update CHANGES.

shivaenigma/pycoin,zsulocal/pycoin,pycoin/pycoin,XertroV/pycoin,shivaenigma/pycoin,mperklin/pycoin,richardkiss/pycoin,zsulocal/pycoin,pycoin/pycoin,richardkiss/pycoin,mperklin/pycoin,XertroV/pycoin