Merge ~lloydwaltersj/gitlptools:wip-lowercase into gitlptools:master

[Jack Lloyd-Walters]

change --WIP to --wip to fix optionss.wip failing

[Adam Collard (adam-collard)]

review: Approve

diff --git a/src/gitlptools/__init__.py b/src/gitlptools/__init__.py
index d88c840..f4635ad 100644
--- a/src/gitlptools/__init__.py
+++ b/src/gitlptools/__init__.py
@@ -238,7 +238,7 @@ def git_lp_propose(argv=sys.argv[1:]):
         default=False,
     )
     parser.add_argument(
-        "--WIP",
+        "--wip",
         help="Create this MP without needs_review set, giving WIP status on the MP.",
         action="store_true",
         default=False,