- I forgot to compress xhtml files. fix that.
- Stylistic change: remove unnecessary brace expansions
- Don't repeatedly append to a file; run commands in a different scope
and write all at once.
Move Nu HTML validator filtering into a shell script:
- Return a bad exit code if validation errors are found after filtering
- Remove null-ish values from the JSON output; the final output *should*
be an empty string, since nothing should be reported.
