bump to version 5 (#214)

Author: bcumming

stackinator/__init__.py

@@ -1,7 +1,7 @@
 import logging
 import re
 
-VERSION = "4.1.0-dev"
+VERSION = "5.0.0"
 root_logger = logging.getLogger("stackinator")
 
 stackinator_version_info = tuple(re.split(r"\.|-", VERSION))