Changes for Crypt::SRP

0.003   2013/04/05
        - no dependency on Digest::SHA1
        - compatibility with Math::BigInt 1.991
        - more reliable sample implementation of client/server
        - ready for CPAN

0.002   2013/04/05
        - sample srp_client.pl + srp_server.pl (+ necessary changes)

0.001   2013/04/04
        - initial version