How to contribute

Branching

Pull requests that fix bugs of a released version should go to x.y-maintenance (e.g. 0.2-maintenance) branch.

Coding style

Follows PEP 8.
Alphabetically order imports.
Prefer relative imports.
All functions, classes, methods, attributes, and modules should have the docstring.
Functions and methods should contain :param:, :type: (:returns:, :rtype if it returns something), (:raises: if it may raise an error) in their docstring.

Tests

All code patches should contain one or more unit tests or regression tests.
There's docs about how to test.
All commits will be tested by Travis CI & GitHub Actions.

Docs

All packages and modules should have .rst file for them inside docs/ directory. For example, if there's wand/module.py there also should be docs/wand/module.rst, and it has to be listed in .. toc:: of docs/wand.rst.
All new classes/functions/methods/attributes/properties have to contain .. versionadded:: in their docstring.
All interface changes have to contain .. versionchanged:: in theirdocstring.