Fix test: test_should_tell_where_a_file_is_trashed

Bump version 0.21.7.23

Update HISTORY.txt and bump version

Bump version 0.21.6.10.1

Update the HISTORY.txt

Fix DeprecationWarning: invalid escape sequence \s

Bump version to '0.21.5.20'

Bump version.

Remove the old method for checking the installation of sdist output. …

…Now we use GitHub Actions.

Fix reStructuredText title in README.rst