Unbreak default
This makes the tests pass against the default
branch, and adjusts the Makefile to make it easier to just run a single test, and to run tests with the correct Python version.
This instance will be upgraded to Heptapod 0.31.0 (final) on 2022-05-24 at 14:00 UTC+2 (a few minutes of down time)
This makes the tests pass against the default
branch, and adjusts the Makefile to make it easier to just run a single test, and to run tests with the correct Python version.