Merge tag 'v1.13'

[maven-release-plugin]  copy for tag v1.13
Merge tag 'v1.13.1'

[maven-release-plugin]  copy for tag v1.13.1
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)
fix the pom file
QuestOWLExample back
Add support for Unicode characters in TurtleOBDALexer
Add support for Unicode characters in TurtleOBDALexer and TurtleLexer
separated Syntactic CQ checks from the Semantic ones
removed redundant code from CQCUtilities
small changes to CQCUtilities
CQCUtilities refactoring
CQCUtilities refactoring cntd.
Update Turtle.g file
CQCUtilities simplified
cleaned CQCUtilities