Also ignore __pycache__ folders

.gitignore

@@ -3,6 +3,7 @@
 *.m
 *.dot
 .cache
+__pycache__
 interface/HUTN/test/grammar_action_language/util.py
 interface/HUTN/test/graph_compilation_action_language/util.py
 kernel/test/functions/utils.py