Python 3.7+ support

[geaden]

Starting from Python 3.7 async is a reserved keyword and cannot be used, as it causes SyntaxError:

lib/python3.7/site-packages/protorpc/remote.py", line 581
    return async_method(self.async, *args, **kwargs).response
                                 ^
SyntaxError: invalid syntax

[thehackercat]

it there any way to fix this not changing self.async to self.async_xxx ?