Update setup.cfg

Author: jspaaks

{{cookiecutter.project_name}}/setup.cfg

@@ -72,4 +72,6 @@ line_length = 120
 
 [tool:pytest]
 testpaths = tests
+# Note that visual debugger in some editors like pycharm gets confused by coverage calculation.
+# As a workaround, configure the test configuration in pycharm et al with a --no-cov argument
 addopts = --cov --cov-report xml --cov-report term --cov-report html