This is currently broken by all the merged pull requests from 11 days ago.

I think it is a problem with the Accept header being set to 'application/vnd.github.v3.raw+json' in #105 but the improved Sha functions etc. from #144 rely on the Accept header being 'application/json' in @darvin commit, but should probably be 'application/vnd.github.v3+json'

However, this change would mean that responses to repo.read with return json with the content base64 encoded, and would break the test on repo.read.

I'm a little confused about how to fix it, since this seems to be a result of different pull requests taking different approaches which are incompatible.

There should also be a test for basic functionality such as writing or updating a file - I'm surprised no one has noticed this breaking change with the new version.

Sorry I can't write a test and help more. It's taken me about 3 hours just trying to understand what is going on and why things are broken now.