Added info on semantic versioning and branching strategy to CONTRIBUTING.md

Also:
- Added isort to Pipenv dev
- Added setup.cfg to make it easy to run flake8, doc8, and isort directly from the command line without using invoke
- Ran isort to sort includes

1 files changed, 6 insertions, 5 deletions

diff --git a/tests/test_transcript.py b/tests/test_transcript.py
index aa6f8c4e..69389b7f 100644
--- a/tests/test_transcript.py
+++ b/tests/test_transcript.py
@@ -5,18 +5,19 @@ Cmd2 functional testing based on transcript
 """
 import argparse
 import os
-import sys
-import re
 import random
+import re
+import sys
 import tempfile
-
 from unittest import mock
+
 import pytest
 
 import cmd2
-from .conftest import run_cmd, verify_help_text
 from cmd2 import transcript
-from cmd2.utils import StdSim, Settable
+from cmd2.utils import Settable, StdSim
+
+from .conftest import run_cmd, verify_help_text
 
 
 class CmdLineApp(cmd2.Cmd):