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New in 2.8:

* Added option -m/--multiple-iterations that reduces the size of the
  generated table.
* Added option --output that allows to specify the output file name.
* Some options have been renamed:
    --hash-fn-name=NAME     -->   --hash-function-name=NAME
    --lookup-fn-name=NAME   -->   --lookup-function-name=NAME
    --compare-strlen        -->   --compare-lengths
    --global                -->   --global-table
  The older variants are still supported for backward compatibility.
* If the input file is given by name, the output file will now contain
  #line directives referring to the input file.
* Bug fixes.

New in 2.7.2:

* Keywords may now be enclosed in double quotes; this permits the use of
  '#', ',', space or NUL inside keywords.
* Bug fixes.

New in 2.7.1:

* Added option "-F" for gcc.

New in 2.7:

* gperf is now a stand-alone package, untied from libg++.
* Autoconfiguring.
* Removed the "-a" and "-g" options, extended the "-L" option instead.
* Removed the "-p" option, it is the default.
* Added long options ("--help", "--version" etc.).
* 8-bit cleanliness is now the default; use "-7" to get the old behaviour.
* Compiles with any C++ compiler.
* Numerous small improvements.