(should fix long-standing issue 98)
* test_ext_django:
- Simplified "stock config" setup code. It now gets it's "sha_rounds" value
from the django source, so we don't have to manually update it every time
django changes their default. This should require less maintenance across
minor django releases. (Should fix issue 98, and prevent recurrence)
- Updated tests to account for quirks in how encoded hashes are handled.
Specifically: None, "", and invalid hashes all cause subtly different
behaviors across django versions. tests pass against django 1.8 - 3.1.
- split "empty hash" test out from the loop it shared with "null hash" test,
since the two behave differently.
* tox: expanded envlist to explicitly test a bunch more django versions
(1.8 - 3.1); and remove some needless "django 2.x + py2" tests
* passlib.apps: reformatted django CryptContext declarations;
added one for django 2.1 (which dropped "django_bcrypt" it's default list)
* passlib.ext.django:
- added internal "quirks" helper as central place to track
minor edge-case changes between django versions.
- passlib_to_django() helper now falls back to searching hasher classes
directly, even if patch isn't installed. this allows it to work
for django hashers that have been removed from django's default list.