Implemented the correct algorithm for monadic enumerated sets. It still needs to be tested.
I am going forward with the strategy of providing a 'Dao.NewParser.LexBuilder' to build lexers from 'Dao.NewParser.GenLexer's and ordinary strings. I have written the foundation for 'Dao.NewParser.LexBuilder', so my next step is to start using it and expand the API to make it more useful. It turns out I probably cannot use the new "Dao.EnumSet" algorithms.
Put the finishing touches on the latest modifications to the "Dao.EnumSet" module, and incorporated those final changes to the rest of the Dao program.