When not encoded ended up with
``` self['oauth_body_hash'] = base64.b64encode(sha1(self.body).digest())
   TypeError: Unicode-objects must be encoded before hashing
   ```

This is a fork from https://github.com/uw-it-aca/spotseeker_client.
Updated to Django 2.x - this is the only change from upstream in this commit.
Now compatible with Python 3.x and Django 2.x