Changes in version 2.1a:
+* GLR, C++ LALR(1) parsers.
+ These parser skeletons are now distributed with the same special
+ license exception that the C LALR(1) parser skeleton has had since
+ Bison 1.24. Hence the FSF imposes no copyright restriction on the
+ output of Bison when it is generating such parsers.
+
+* %expect, %expect-rr
+ Incorrect numbers of expected conflicts are now actual errors,
+ instead of warnings.
+
* GLR, YACC parsers.
The %parse-params are available in the %destructor's (and the
experimental %printer's) as per the documentation.