SciPy pull request guidelines

Pull requests are always welcome, and the Scipy community appreciates any help you give. Note that a code of conduct applies to all spaces managed by the SciPy project, including issues and pull requests: https://github.com/scipy/scipy/blob/master/doc/source/dev/conduct/code_of_conduct.rst.

When submitting a pull request, we ask you check the following:

1. Unit tests, documentation, and code style are in order. For details, please read https://github.com/scipy/scipy/blob/master/HACKING.rst.txt

   It's also OK to submit work in progress if you're unsure of what this exactly means, in which case you'll likely be asked to make some further changes.

2. The contributed code will be licensed under SciPy's license, https://github.com/scipy/scipy/blob/master/LICENSE.txt If you did not write the code yourself, you ensure the existing license is compatible and include the license information in the contributed files, or obtain a permission from the original author to relicense the contributed code.