Add full SPDX headers.
Prevent lossage on version-number mismatch.
Add reflow production.
Cease testing with Python 2.
Improved clean production.
e-conorm to the documentation by removing the .py estension from sst.
Quet down pylint.
Use magic-comment pylint suppressions.
Run pylint on check.
pylint cleanup - found an actual bug this time!
pylint cleanup.
BSD friendliness.
pychecker seems no longer useful.
pylint cleanup
Manual merge of GitLab MR !1
Documentation and web page polishing.
Make the web reference.
Switch to shipper packaging.
Fix distribution maker.
Improve the archive maker.