* Inline distutils.util.strtobool in tests (#813)
`distutils` is deprecated in Python 3.10 and slated for removal in
Python 3.12. Fortunately, `attrs` only uses `distutils` once and it's
trivial to remove.
As suggested by @sscherfke, add the `to_bool` converter to
`converters.py`.
Closes#813
Co-authored-by: Stefan Scherfke <stefan@sofa-rockers.org>
* Use :raises: directive in docstring
* Remove f-strings for Py2.7 and 3.5 support
* Add to_bool tests
Co-authored-by: Stefan Scherfke <stefan@sofa-rockers.org>
Co-authored-by: Hynek Schlawack <hs@ox.cx>
e84b57ea68