Evaluate ISO 29500-2 / Open Packaging Conventions (OPC) as an alternative for BagIt

[nuest]

If we ever come to a point where we need an alternative to BagIt, or additional features, or come in contact with other communities than libraries/preservation, these packaging standards could be evaluated.

• http://standards.iso.org/ittf/PubliclyAvailableStandards/c061796_ISO_IEC_29500-2_2012.zip
• https://en.wikipedia.org/wiki/Open_Packaging_Conventions