Set version to 3.3.3

hardbyte · hardbyte · commit 8b76232e283c · 2020-05-18T10:16:58.000+12:00
diff --git a/can/__init__.py b/can/__init__.py
@@ -8,7 +8,7 @@
 
 import logging
 
-__version__ = "3.3.3-alpha.3"
+__version__ = "3.3.3"
 
 log = logging.getLogger('can')
 
