Update conf.py

Author: whotwagner

docs/source/conf.py

@@ -13,7 +13,7 @@
 project = 'AttackMate'
 copyright = '2023, Wolfgang Hotwagner'
 author = 'Wolfgang Hotwagner'
-release = '0.4.0'
+release = '0.6.0'
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration