Bump to 3.3.4rc1.
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index 60f1d32..a51920b 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "3.3.3"
+IDLE_VERSION = "3.3.4rc1"