Simulating Reloadable to allow non-AR models to reload?

I am porting a 1.1.6 app. to 1.2.x.

The Reloadable module is gone, so “include Reloadable” doesn’t do
anything any more. I was using this to allow my non-table backed models
to reload automatically in development.

Is there another easy way to get models that do not descend from
AR::Base to reload automatically on each request in development?