No to coverage 5

Author: wsanchez

tox.ini

@@ -31,7 +31,7 @@ basepython =
     pypy3: pypy3
 
 deps =
-    test: coverage==5.0.3
+    test: coverage==4.5.4  # rq.filter: <5
     test: idna==2.8
     test: typing==3.7.4.1
     test: {py26,py27,py34}: pytest==4.6.9