After one too many pipeline failures due to old spell-checking
mistakes, I decided to own up to my stuff and spell check
everything. I actually ran:

     codespell --interactive 3 --write-changes *

And dealt with *almost* all the errors, except stuff in old/ which
I'll remove shortly.

When an error comes up now, it is new and should be fixed.

roadmap/2022.md

@@ -79,7 +79,7 @@ Those things will *not* be done during the specified time frame:
 We didn't do much in the TPA roadmap, unfortunately. Hopefully this
 week will get us started with the bullseye upgrades, and some
 initiatives have been *started* but it looks like we will probably not
-fullfill most (let alone all) of our objectives for the roadmap inside
+fulfill most (let alone all) of our objectives for the roadmap inside
 TPA.
 
 (From the notes of the [2022-04-04 meeting](meeting/2022-04-04).)