simplified sigma in Quest
cleaned up CQCUtilities a bit
a bit more cleaning of CQCUtilities
introduced DataDependencies class
DataDependencies added
cleaned up CQCUtilities (more to be done)
separated Syntactic CQ checks from the Semantic ones
removed redundant code from CQCUtilities
small changes to CQCUtilities
CQCUtilities refactoring
CQCUtilities refactoring cntd.
CQCUtilities simplified
cleaned CQCUtilities
EquivalenceMap split
small changes to Quest
remove ontology vocabulary manipulations
eliminated EquivalencesMap
minor changes
cleaned EquivalenceDAGImpl
Equivalence simplification improved