Avoid explicit doubles.

I was tired of the amount of ifs that changed behaviour
depending on stage 1 or 3. This is a cleaner approach.

It is not necessary anymore

It is applied to the function call...

It would be hard to implement on top of the latest feature and contradict
features projected for the near future.

fixes a nasty bug, where face information was omitted

By implementing repr such that instance addresses are
not part of sorting anymore