0.0.4

Added

• Verify manifest hash with --hash (#51 by casey)
• Add key generation, printing, signing, and verification (#48 by casey)
• Allow including metadata in manifest (#44 by casey)

Changed

• Don't allow metadata template to be included in package (#47 by casey)

Misc

• Publish manifest with releases (#56 by casey)
• Optimize release build (#57 by casey)
• Include manifests in release archives (#55 by casey)
• Add signing utility table to prior art readme section (#54 by casey)
• Add gpg and ssh-keygen to prior art readme section (#53 by casey)
• Add hashdeep and hashdir to alternatives section in readme (#52 by casey)
• Use kebab-case field names (#46 by casey)
• Allow unknown keys in manifest but not in metadata template (#45 by casey)