Yannis: statistics issue fixed
Merge remote-tracking branch 'origin/new-trans2' into coptimizations2

Conflicts:
	generator-out/run_scala.sh
	legocompiler/src/main/scala/ch/epfl/data/legobase/compiler/Main.scala
Yannis: moving to new transformer API
Merge remote-tracking branch 'origin/coptimizations2' into new-trans2