Honor ResourceWarnings. Fixes jaraco/skeleton#73.
@@ -3,6 +3,9 @@ norecursedirs=dist build .tox .eggs
addopts=--doctest-modules
doctest_optionflags=ALLOW_UNICODE ELLIPSIS
filterwarnings=
+ # Ensure ResourceWarnings are emitted
+ default::ResourceWarning
+
# Suppress deprecation warning in flake8
ignore:SelectableGroups dict interface is deprecated::flake8
