tox: add setup.py to isort and pylint targets

Author: radhermit

tox.ini

@@ -98,9 +98,9 @@ deps =
 commands =
     bash -c "shopt -s extglob globstar nullglob; cython-lint --max-line-length 100 **/*.p{yx,xd}"
     # check for improperly formatted imports in non-generated files
-    isort -l 100 -s pkgcraft_c.pxd --check-only --diff benches examples src tests
+    isort -l 100 -s pkgcraft_c.pxd --check-only --diff benches examples src tests setup.py
     # check for unused imports
-    pylint --score=no --disable=all --enable=W0611 benches examples tests
+    pylint --score=no --disable=all --enable=W0611 benches examples tests setup.py
 
 [testenv:sdist]
 description = build the source distribution