v0.6.0: removing protobuf files

This release bumps the minor version since we have removed the protobuf generated structs, and have instead replaced them with plain go structs. We bumped minor versions since this removed all the protobuf related methods on the generated structs, as well as moving to *time.Time instead of pbtypes.Timestamp.

New since v0.5.3:

• remove protobuf types (#51)
• Detect file header, when parsing Hunk (#53)
• diff: support renamed, updated binary file (#38)
• Add handling added/deleted files in diff (#50)