setup: bump to version v0.4.0

Author: William Ballenthin

setup.py

@@ -15,7 +15,7 @@
 
 setup(
     name='python-idb',
-    version='0.3.6',
+    version='0.4.0',
     description='Pure Python parser for IDA Pro databases (.idb files)',
     author='Willi Ballenthin',
     author_email='[email protected]',