Setup CI and add tests

[d1ll0n]

We should decide on a code style for the repository and enforce consistency through CI rules.

We should also add thorough unit testing and run it on every push to ensure the package maintains consistent behavior between versions.

I'm just starting a discussion here - would love any opinions on what the style should be and any other comments on the CI / testing / linting strategy. I'd appreciate links to any examples of these in other repositories that people like.

[totoyo1211]

@Thanks

[totoyo1211]

@Thanks