Add pytest-cov for coverage support and pytest-enabler to enable that…

… support.

Removed coverage dependency (let pytest-cov get it).

Added coverage config (from jaraco/skeleton).

dev-requirements.txt

@@ -1,14 +1,15 @@
 pip>20.0
 wheel>=0.29.0
 black>=19.3b0,<22.0
-coverage>=4.3.4,<6.0.0
 flake8>=3.7.9,<5.0.0
 flake8-black>=0.1.1,<0.3.0
 nose>=1.3.7,<2.0.0
 manage.py>=0.2.10,<0.3.0
 pkutils>=3.0.0,<4.0.0
 pylint>=2.5.0,<3.0.0
 pytest>=8,<9
+pytest-cov
+pytest-enabler>=2.2
 responses>=0.9.0,<0.15.0
 setuptools>=42.0.2
 tox>=3.14.3,<4.0.0

pytest.ini

@@ -1,4 +1,5 @@
 [pytest]
+norecursedirs=.tox .git
 addopts=
 	--doctest-modules
 	--ignore manage.py