espaces.
  [This turned out to be a failed experiment, and it was reverted later.]

** Reduced Grammars
  Fixed bugs when reporting useless nonterminals.

** 64 bit hosts
  The parsers work properly on 64 bit hosts.

** Error messages
  Some calls to strerror resulted in scrambled or missing error messages.

** %expect
  When the number of shift/reduce conflicts is correct, don't issue
  any warning.

** The verbose report includes the rule line numbers.

** Rule line numbers are fixed in traces.

** Swedish translation

** Parse errors
  Verbose parse error messages from the parsers are better looking.
  Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
     Now: parse error: unexpected '/', expecting "number" or '-' or '('

** Fixed parser memory leaks.
  When the generated parser was using malloc to extend its stacks, the
  previous allocations were not freed.

** Fixed verbose output file.
  Some newlines were missing.
  Some conflicts in state descriptions were missing.

** Fixed conflict report.
  Option -v was needed to get the result.

** %expect
  Was not used.
  Mismatches are errors, not warnings.

** Fixed incorrect processing of some invalid input.

** Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.

** Fixed some typos in the documentation.

** %token MY_EOF 0 is supported.
  Before, MY_EOF was silently renumbered as 257.

** doc/refcard.tex is updated.

** %output, %file-prefix, %name-prefix.
  New.

** --output
  New, aliasing "--output-file".