scripts/make-release: print out shortlog for inclusion in release announcements The revset should generate the correct list compared with the last tagged release on the stable branch. The same revset should be used as a basis for release notes.

# 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
.