Add credits comment block to exported grammars
Add agent noun transforms
Update verb transforms

Irregular verb transforms have been removed for now (they may be
re-added as separate dictionaries later). The regexes have also been
tuned and improved.
Shorten regex transform format

The default flag is 'ig', so most transforms should be wrapped in
^...$, and other regex flags are currently not supported.
Update verb transform labels
Remove irregular noun pluralizations
Update catchphrase generator
Sanitize grammar before exporting
Convert wordlist array objects to strings
Add name/author fallback in exported comment