release: bump to v0.4.1

Author: wwwillchen

mesop/pip_package/setup.py

@@ -35,7 +35,7 @@ def get_readme():
 
 setup(
   name="mesop",
-  version="0.4.0",
+  version="0.4.1",
   description="Build UIs in Python",
   long_description=get_readme(),
   url="https://github.com/google/mesop",