Shockingly, this didn't require any code changes. But PHP is more forgiving with "strict typing" than I'd expected. I may go back and clean up function declarations later, but that's not urgent.
Reviewed-on: https://gitea.subcultureofone.org/greg/tkr/pulls/60
Co-authored-by: Greg Sarjeant <greg@subcultureofone.org>
Co-committed-by: Greg Sarjeant <greg@subcultureofone.org>