pylint: fix W0715(raising-format-tuple) Exception arguments suggest string formatting might be intended kallithea/lib/utils2.py:453: W0715(raising-format-tuple) in get_changeset_safe: Exception arguments suggest string formatting might be intended kallithea/lib/vcs/backends/git/changeset.py:360: W0715(raising-format-tuple) in GitChangeset.fill_archive: Exception arguments suggest string formatting might be intended kallithea/lib/vcs/backends/hg/changeset.py:322: W0715(raising-format-tuple) in MercurialChangeset.fill_archive: Exception arguments suggest string formatting might be intended

# 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
.