Until now, comments were stored in filenames with an incrementing
counter. As a result, conflicts are easy; two people commenting on a
post around the same time would create the same filename. Then they'd
run into conflicts when merging.
Now comment filenames include a random slug.
A secondary consideration is filtering out comments from the file-picker
screen. It's only intended for top-level posts. I had a hacky way to do
this. My ideal approach would be a directory per post, but Lua+LÖVE
doesn't have a portable way to create directories.
Now you now have to manually create a single directory called
`comments/` in the directory of articles before using pothi.love.