Bump to 3.3.0a1.
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index 5e9afb1..76b8bb8 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "3.3a0"
+IDLE_VERSION = "3.3.0a1"