Hackage release 0.1.0.1

[stites]

I finally got around to uploading this to hackage, here. Since I use this for work, I'm pointing hackage to my fork. (@Lucsanszky, I've invited you to collaborate via github).

Changelog includes:

• remove OpenAI.Gym.Prelude - it felt weird to include a prelude for a package of this size (Internal wasn't necessary since there are now only two modules).
• haddocks everything
• lock in lower bounds (maps to stack lts-8.1 which pins GHC to >= 8.0)
• migrate back to newtypes

RE: @Lucsanszky, @catherio

[stites]

For future reference, because this PR is not getting merged it is now becoming a live feed of any updates to stites/gym-http-api's master (which is being pushed to stackage and hackage)