ref: https://git-scm.com/docs/gitmailmap

Example repo with configured: https://github.com/pypi/warehouse/blob/7db891c2aec6787b895ea1039a8aef297ce3afd2/.mailmap

Helps deduplicate entries, and correctly attribute to authors configured.