Declare universal wheel support

moreati · moreati · commit 2da5cd7aff01 · 2021-01-27T20:42:16.000Z
This mean the package is single source compatible with Python 2.x and 3.x. There is no need to build separate wheels. (cherry picked from commit f0ffd16)
diff --git a/setup.cfg b/setup.cfg
@@ -1,3 +1,6 @@
+[bdist_wheel]
+universal=1
+
 [coverage:run]
 branch = true
 source =
