Pin covereage version

Qmando · Qmando · commit ec5d03b95708 · 2020-01-02T11:22:36.000-08:00
diff --git a/requirements-dev.txt b/requirements-dev.txt
@@ -1,5 +1,5 @@
 -r requirements.txt
-coverage
+coverage==4.5.4
 flake8
 pre-commit
 pylint<1.4
