smpa speced and impmted; append and finite_stream created
flatmap implemented
n_queens helpers
flatmap usage specified for N_Queens solution
N_Queens problem solved
stacking out to core for implementation of each_pair
going to core again
first level expansion + only impmtd
branching out into core (again)
numbers implemented without streams
malformed version number corrected -1.0-pre --> 1.0.pre