preload external dataset, model, agent
Merge branch 'master' of github.com:ooici/coi-services into preload_external_data
Merge branch 'master' of github.com:ooici/coi-services into preload_external_data
more changes for external dataset preload
improve log statements
Merge branch 'master' of github.com:ooici/coi-services into preload_external_data
test dataset agent config dicts, bump tested doc URL
Merge branch 'master' of github.com:ooici/coi-services into preload_external_data
Bump epu
Merge pull request #926 from newbrough/preload_external_data

Preload external data
Add keywords and created_by to SGS attachment create route
Merge pull request #929 from daf/sgs_attachment_keywords_createdby

Add keywords and created_by to SGS attachment create route
Adds unit system support for ion loader