By fixing the ordering of nodes in annotate and node filtering, seeded test generation became deterministic in case of mutation and recombination, too.
coverage: 88.806% (+0.01%) from 88.792%
when pulling c5d93609490860c26c9bfb9479bda2dc1735c7e8 on random
into 67dd9435571b2a0f0af2551d8ee92743a442def7 on master.
By fixing the ordering of nodes in annotate and node filtering, seeded test generation became deterministic in case of mutation and recombination, too.
Fixes #170.