Bump to 8.8.1.dev0

Author: JohanMabille

jupyter_client/_version.py

@@ -3,7 +3,7 @@
 import re
 from typing import Union
 
-__version__ = "8.8.0"
+__version__ = "8.8.1.dev0"
 
 # Build up version_info tuple for backwards compatibility
 pattern = r"(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)"