REL: Bump release version.

Author: Scott Sanderson

setup.py

@@ -28,7 +28,7 @@ def install_requires():
 
 setup(
     name="python-interface",
-    version="1.5.3",
+    version="1.5.4",
     description="Pythonic Interface definitions",
     author="Scott Sanderson",
     author_email="scott.b.sanderson90@gmail.com",