Change log for WWW::Yahoo::Groups

1.5 - But it helps to not mess up the MB scripts. Ta Merlyn.

1.4 - Module::Build is nicer than MM

1.3 - Added SIGNATURE (Module::Signature)
    - Added example program.
    - Refined doco.

1.2 - More tests, more exceptions, param validation.

1.1 - initial (crappy) release.