Updates to fix warnings.
Changes to fix compiler warnings.
Fixed gem compile problems.
Added round method.
Improvements to Randomize.
Fixed problem with getting output.
Added default rake task.
Now have working gem.
Improvements to tests.
Now using TrainingSession.
Moved more printing to USE_BACKPROP_VERBOSE.
More improvements for printing.
Added BackpropTrainer_ComputeLastLayerError.
Fixed test__train_pair