This move has long been planned. Time to do it.
Fix pipe_base after Instrument was moved to obs_base
Doing this work in preparation for completing obs_decam gen3.
Jim Bosch: are you able to do this small review? I left "ObservationDimensionPacker" in `lsst.daf.butler.instrument`, since that kept the various butler unittests happy.
Jenkins passed including ci_hsc.
Sure, thanks for taking it. Mind making the PRs for it? (Or is Jira just not showing them?)
Nevermind; found the PRs. All looks good.
Thanks for the quick review! Merged before the weekly!