diffs: inline prepare() into __init__ and make the result available as .parsed Make it more clear what the DiffProcessor is: Something that works on a raw diff as input, mainly compute when initialized, and returns an object where the result is available in different ways.

# requirements.txt file for use as "pip install -r requirements.txt" as a
# readthedocs compatible alternative to "pip install -e ." which is a working
# alternative to "setup.py develop" which doesn't work with Mercurial 3.7
.