airblade/paper_trail — pull request #441 by yuroyoro (2014-11-10 04:57:05+00:00)
Title: PaperTrail.enabled_for_model? should return false if the model does not stored in `paper_trail_store`

`paper_trail_store.fetch(:"enabled_for_#{model}", true)` returns true if `:"enabled_for_#{model}"` isn't in `paper_trail_store`.