i18n: regenerate translation data (commit de1342abcf42) Regenerate translation data based on new development on the default branch, including removal of the repository locking feature, and addition of SSH repository access. This commit was created via: scripts/i18n-update export <repo> -r de1342abcf42

# 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
.