trying out usedevelop option for tox

setup.cfg

@@ -13,7 +13,7 @@ search = version='{current_version}'
 replace = {new_version}
 
 [bumpversion:file:docs/cookiecutter_input.json]
-search = "package_version": "{current_version}"
+search = 'package_version': '{current_version}'
 replace = {new_version}
 
 [metadata]
@@ -121,6 +121,7 @@ skip_missing_interpreters = true
 envlist = 
 	py{38}
 recreate = true
+usedevelop = true
 
 [gh-actions]
 python =