including new features (productive productions and new extract productions builder) in the changelog
disallowing regular symbols (A?, A+, A*) to have regular symbols as their children (lists of lists, optional of lists, etc)
allowing alternatives in lexical syntax
fix newline coding on different OS
check for alternatives and regular symbols that are not Sort*, Sort+ or Sort? in context-free syntax
updates in the include folder
better error messages when applying a builder