[Amibe] support {0} in logging
[Amibe] logging: add computation time by algorithm
[Amibe] Make AbstractAlgoHalfEdge.tree private and factorize code
[Amibe] AbstractAlgoHE: black list not process-able half edges

... instead of giving them a penality
[Amibe] QEMDecimateHalfEdge: project only if collapse occurred

... not when testing if collapse can occur.
[Amibe] QEMDecimateHE: move some checks from canProcessEdge() to cost()