Version number bump for Python 3.5.0a4.
diff --git a/Lib/idlelib/idlever.py b/Lib/idlelib/idlever.py
index f2312c2..c41b499 100644
--- a/Lib/idlelib/idlever.py
+++ b/Lib/idlelib/idlever.py
@@ -1 +1 @@
-IDLE_VERSION = "3.5.0a3"
+IDLE_VERSION = "3.5.0a4"