add module docstring for versioning.py

2020-07-01 09:36:01 -04:00 · 2020-07-01 09:36:01 -04:00 · 2ac3a4b524
parent 53dbc5835e
commit 2ac3a4b524
2 changed files with 3 additions and 1 deletions
--- a/stix2/versioning.py
+++ b/stix2/versioning.py
@ -1,3 +1,5 @@
+"""STIX2 core versioning methods."""
+
 import copy
 import datetime as dt
 import itertools