A grammar may now contain several entry points, allowing several parsers to share parts of the grammar. Yacc-style operator precedence, thanks to patches from Hermann Oliveira Rodrigues and Josef Svenningsson . A debug option which causes the generated parser to print tracing information at each step during parsing.
Several bug fixes.
Happy has a new Open Source license, based on the BSD license. A sample Haskell parser using Happy is included. Happy now compiles with ghc-0.26. Miscellaneous bug fixes.