Anthony Smith

The list of observed models seems to grow exponentially, containing each model many times (duplicates). It is apparently solved by putting `models.uniq!` in `Observing.observe(*models)`. I'll try to put a fix...

It's been a few years, and I'm not working with Rails any more, so my memory is a bit hazy, but yes, I consider it solved.

... although the pull request seems to still be open, so maybe it isn't fully solved yet...? https://github.com/rails/rails-observers/pull/36