An Emacs .org file is the source in to (re)create a Python script
to perform a few tests on date2name's functions to prepend a date/
time stamp. The .org file equally is source for the Makefile to
automate the testing even further.
Set up for and tested in Linux Debian 12/bookworm (branch testing)
with Python 3.9.2, pytest 6.2.4 (for Python 3); GNU Make 4.3;
GNU Emacs 27.1 backed by elpa org 9.4.0.
