nn reduction composition bugfixes (not backwards compatible)
tweak movielens demo
make test pass
tweak movielens demo
merge upstream master
Merge branch 'new_new_upstream_master' into nnfixes
tweak alignment code in parse_args.cc and revert bs test changes
tweak movielens demo
Merge pull request #221 from pmineiro/nnfixes

nn reduction composition bugfixes (not backwards compatible)