Rtd-redirects

- The package now uses Poetry and pyproject.toml
- The commercial version of RTD is now supported through the `--pro` and `--free` flags! Thanks VanDavv 🚀

Fix
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- Make login success check less fragile (9f8d74b990c6428282f772b90ec43f9f86b94cf1)


Documentation
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- README refinements (5903535503c7115a5f84b358bc155b75a14b664a)

Feature
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- Initial commit (dd78ee02cbb238c24dae926621178348eab0ec1b)