test: usedevelop instead of set -e

Author: kdmccormick

tox.ini

@@ -35,11 +35,11 @@ addopts = --cov src --cov tests --cov-report term-missing --cov-report xml
 norecursedirs = .* docs requirements site-packages
 
 [testenv]
+usedevelop = True
 deps =
     setuptools
     django42: Django>=4.2,<5.0
     django52: Django>=5.2,<6.0
-    -e {toxinidir}
     -r{toxinidir}/requirements/test.txt
 setenv =
     # Note that the django32/django42 targets use MySQL, but running pytest by