[ocl25] Add some CS editorial content
[ocl25] Simplify infix parsing
[ocl25] Simplify infix parsing
[448470] Avoid standalone console diagnostic
[ocl25] Define unambiguous CS as superclasses
[ocl25] One UnaryOperatorCS per PrefixExpCS
[ocl25] Fold UnaryOperatorCS into PrefixExpCS
[ocl25] Eliminate NavigationOperatorCS
[ocl25] Eliminate BinaryOperatorCS
[ocl25] Rename OperatorCS as OperatorExpCS