Dude! Yessss!! Thank you so much, this makes my day. You should find a big coffee in your inbox. ;)
You can now pause with the ESC button. You are welcome. I haven't tested everything, so if you notice something moving (they still might animate; I am working on that) let me know.
You can thank nucleonic for reminding me pausing is a thing games should have. He also owes me a coffee I believe :)