Log eval, importances during distributed tree building
Fix error when RDF used with an ignored (ID) column
Specify Content-Type in servlet response; required by some clients
Add /classificationDistribution endpoint for RDF
Turns out that generating initial Y vectors on the unit sphere *from within the first quadrant only* (all nonnegative elements) is a tiny bit better.
Merge remote-tracking branch 'remotes/origin/master' into MR1