First hacky attempt to get faraday working instead of Net::HTTP
Fix token refresh request
Refactor Session#api_call and Session#refresh_access_token, add some specs
Remove unused code
Handle non-hash responses for api calls
Remove session-only functionality (using session_key) for now; only OAuth2 supported
Support quirky json (not dictionary or arrays in the root)
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Merge branch 'switch-to-faraday'