add: filtering rule GWsTA-ML + auxiliary net post propagation (better perfs) + all stats returned in test_stats + added similarity_measure and matching_measure

Signed-off-by: Stephen L. <lrq3000@gmail.com>
add: fig3concurrent_diseq.m to plot evolution of concurrent error with disequilibrium trick + gbnn_test.m return inputm

Signed-off-by: Stephen L. <lrq3000@gmail.com>
add: gbnn_dbsearch.m to do an indexed memory search by exhaustive similarity comparison to all learned example in the database

Signed-off-by: Stephen L. <lrq3000@gmail.com>