I went ahead and put something together quickly. Currently its just in a branch if you could give it a try:
To install simply clone the branch, open a command prompt, navigate to the repository root and run:
pip install .
For the keyword you will now just need to supply your partial window_name (without any extra regex characters) and set ‘exact_match’ to False
Switch Application By Name | http://localhost:4723 | window_name=Sample App | exact_match=False
Let me know if that works for you!