BREAKING CHANGE: Replace host and proto keyword args with a single base_url kwarg.
base_url should include the protocol, unless your adapter does that for you, which requests does not.
Ex:
# replace
api = BasicAPI('api.example.com')
# with
api = BasicAPI('https://api.example.com')
# or
api = BasicAPI(host='api.example.com')
# with
api = BasicAPI(base_url='https://api.example.com')