0.13.0

Added

• PR#84 resolved #67 by inlining the askalono crate to allow detection of license texts or headers from arbitrary text data. There are multiple features flags associated with this new feature.
• PR#85 resolved #82 by optionally allowing the parsing of unknown identifiers via ParseMode::allow_unknown. Unknown identifiers are either treated as LicenseRef-<unknown identifier> or AdditionRef-<unknown identifier> depending on their position. Unknown identifiers on positions that are invalid for either licenses or exceptions are still considered parse errors.