+ Rename +vertico--embark-target-package to
+vertico-embark-target-package-fn to conform to naming conventions,
and because it's not a private function anymore.
+ Fix +vertico-embark-target-package-fn's indentation.
Fix#5208
+ Escape any special regexp characters in the active selection.
+ Change the async split character (#) to the first of %, @, !, &, or /
that is absent in the active selection (falling back to %
otherwise) (since consult doesn't recognize escaping for these
characters).
- unify `map!` statements when possible
- rename `+vertico--embark-target-package!` to
`+vertico--embark-target-package` and autoload it
- set `completion-in-region-function` to a wrapper function instead of
changing it with a hook
- use `:override` advice instead of `fset` for `multi-occur`
- document what `vertico-directory-tidy` does
- move `:init` contents to `:config` when possible
- Rename module from `:completion selectrum` to `:completion vertico`
- Rename all files involved
- Do *not* yet rename all the functions, as that messes up git's rename
detection.
