Fix `https://danbooru.donmai.us/artists.json?expires_in=300` failing with
an `'300' is not a valid duration` error. This call pattern is used by the
Translate Pixiv Tags userscript.
Caused by a5ed8c72, which changed the `age:N` metatag to require time
units, but this inadvertently changed the `expires_in` parameter to
require them too.
Using `expires_in` without time units is deprecated and will be removed
in the future.
This directory contains library code used through Danbooru. This includes things like defining API clients, dealing with
sources, parsing tag searches, storing and resizing images, and so on.
Many of the files here use the Service Object pattern. Instead of putting complex code in models or controllers, it goes
here, in plain old Ruby objects (POROs). This keeps models and controllers simpler, and keeps domain logic isolated and
independent from the database and the HTTP request cycle.
65ab7f1eb5