Fixing tests on macOS by ensuring gnureadline is used.

Author: kmvanbrunt

Pipfile

@@ -27,7 +27,6 @@ pytest-mock = "*"
 sphinx = "*"
 sphinx-autobuild = "*"
 sphinx-rtd-theme = "*"
-tableformatter="*"
 twine = ">=1.11"
 
 [pipenv]

tests/test_cmd2.py

@@ -16,6 +16,9 @@
 from unittest import (
     mock,
 )
+from cmd2.rl_utils import (
+    readline,
+)
 
 import pytest