The Pull Request To Close This Year's Pull Requests

Yep. @jankeromnes, give me a few questions if you want, then merge this, thefiletree is already running it.
I think it was clearer when the 404 code was after the declared helper functions `sendraw` and `end`. Relying on the hoisting of the `end` function causes the reader here to wonder "what is `end()`?".