update Cassowary code to use symbolicEquality methods, and to set the RuPyPy Constraint Variable objects reference to the solved value
update Cassowary code to use symbolicEquality methods, and to set the RuPyPy Constraint Variable objects reference to the solved value

babelsberg/babelsberg-r,babelsberg/babelsberg-r,babelsberg/babelsberg-r,babelsberg/babelsberg-r,babelsberg/babelsberg-r