4.8 with extractors (patch 2)

• Previously usage of rule options such as <assoc=right> prevented scala extractors from being generated. Specifically, the "assoc" option is allowed now and does not prevent extractors from being generated.

4.8 with extractors (patch 1)

• Previously only supported combined grammars, but now also parser/lexer grammars.
• No longer reject alternatives that contain predicates and/or actions

4.8 with extractors

4.8-extractors

initial: scala-extractor-objects