Howdy! Author here.

I definitely wanted to do all parts in Python but am somewhat allergic to the `while True:` pattern necessary in Python for changfeeds. I haven't brought myself up-to-date on the more recent asyncio library to write the more Pythonic `yield from` for a changefeeds example.

Would you know how to do this in Python elegantly? Because I would love to rip out the Node/Javascript parts.