#290 Expose 'guess only' functionality

[Michael Carden]

On its way to normalising data objects, Xena determines file formats. There are tools in existence like DROID and JHOVE that are designed to determine file formats but they tend to be limited and less accurate than Xena. If we could make 'guess only' an option and expose it via the API, I think that Xena's use by more institutions would be encouraged.

Note: NARA asked me last week for this specific feature.

[John]

Is this the same as "Identify Only option in Xena Lite" - https://sourceforge.net/tracker/?func=detail&aid=1889309&group_id=85722&atid=577092?