0.04:
    - Text::Diff and diff support.
    - Ask before overwriting SIGNATURE, as suggested by Benjamin Goldberg.
    - Basic documentations is finally there.

0.03:
    - Added boilerplate text before SIGNATURE to explain what's it about.
    - Crypt::OpenPGP signature didn't work.

0.02:

    - Fix typo in manpages.
    - Distname changed from ExtUtils-Signature to Module-Signature.

0.01:

    - First proof-of-concept release.