Contributing guidelines

I have an idea for a new rule

Open an issue with your proposal. Make sure you elaborate on what problem it solves and include fail/pass examples. (Example)

I have an idea for a new rule and I also want to implement it

First open an issue with your proposal. When the rule is accepted, see the docs on creating and submitting a new rule.

I want to implement a rule from an open issue

See the docs on creating and submitting a new rule.

How to write tests

See the docs on writing tests.