Switch output/anti-drift to using TaggedImage

As convenient as ImageProcessors might be, MM seems to prefer TaggedImage,
and there's no good reason we can't use this format. MDUtils provides
well-defined access to the metadata. Additionally, this eases the
implementation of ProgAcq as an AcquisitionEngine2010.

Signed-off-by: Luke Stuyvenberg <stuyvenberg@wisc.edu>