updated version number to 2.2.1 (#342)

BolunDai0216 · web-flow · commit 896b008e6da0 · 2023-03-28T00:35:39.000+01:00
diff --git a/minigrid/__init__.py b/minigrid/__init__.py
@@ -6,7 +6,7 @@
 from minigrid.core import roomgrid
 from minigrid.core.world_object import Wall
 
-__version__ = "2.2.0"
+__version__ = "2.2.1"
 
 
 try:
