Tried to fix sentiment test set issues, unsuccessful
Merge remote-tracking branch 'origin/gregsubmission'
finish the dense transform layer stuff.
neural model back up and running.
default to not using features in neural model.
fix the partitioning.
prettification
don't crash if we can't serialize parser..
dunno.
Merge branch 'master' of github.com:dlwh/epic
improvements to Neural Model, mostly efficiency.
newer assembly plugin
Tanh rather sigmoid?
tanh, and some tweaks
ChartMarginal from a refined anchoring
ReachabilityProjection->OracleParser
allow SpanModel to support Latent annotation
LatentSpanModelFactory... lot of copy paste. 

hopefully cull later.
Merge branch 'master' of github.com:dlwh/epic

Conflicts:
	src/main/scala/epic/parser/models/NeuralModel.scala
ability to not use constraints