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

It does not yet do all the jobs it can do, but it exists and we can
run tests with it.

by introducing an order on the kernel objects and
using the first n kernels instead of an itertools.permutations
generator

We will need even more "levels" in the near future

for further extension