merge Gibbs and cleanup
debugging fastCompile mode with OptiML
converting node-constructing methods (non-composites) to composites in order to reduce object size as a workaround for apparent scalac class generation bug
dummy variable encoding for DiscreteFeature
use app-visible fsplit instead of array_string_split in OptiWrangler example
Merge pull request #57 from stanford-ppl/workaround_classgen_bug

workaround classgen bug
Merge remote-tracking branch 'origin/master' into cpp-hashmap
fix app