0.22 
 - Rewrite new()
 - Rmpz_out_str() now takes an optional third argument - a string that
   will be appended to the mpz_out_str() output. Also stdout is
   fflush()'d each time Rmpfr_out_str() is called.
 - The overload functions and new() can now handle a long double value
   correctly

0.21
 - Add "Name" section to the pod
 - Remove 'Makefile.old' from the source. (Doh !!)

0.20
 - First CPAN release
 - No longer assign Exporter and DynaLoader to @Math::GMPz::ISA.
 - Add support for use64bitint
 - add new() function/method to facilitate initialization/assignment


