Python package dependencies updated to latest versions.
Removed RSS feed /rss (no longer included in latest version of Werkzeug).
Dropped support for installing on macOS, Red Hat, and Ubuntu.
Updated Dockerfile to build slim Python 3.8 image (the new image is ~198MB in size). Docker will be the only supported method of running Patch Server going forward. Patch Server remains a Flask application so manual installs can still be performed.
/rss(no longer included in latest version of Werkzeug).