0.04

    - check SvROK first(reported by yappo++)
    - PreferInteger: faster string to integer conversion; support negative value
      (frsyuki++)
    - make PreferInteger variable magical and remove get_sv from _msgpack_pack_sv
      (frsyuki++)

0.03

    - performance tuning for too long string
    - fixed memory leaks in stream unpacker

0.02

    - added $Data::MessagePack::PreferInteger
      (requested by yappo++)

0.01

    - initial release to CPAN