Merge pull request #472 from demaagdk/develop

Bug fixes
Merge pull request #473 from demaagdk/develop

Inspections now assume plugins return SimpleCV features instead of Frame...
Merge pull request #474 from demaagdk/develop

worker to backfill multiple inspections
support for new ss
Merge pull request #475 from Tendrid/develop

support for new ss
Merge pull request #476 from demaagdk/develop

Bug fixes related to VQL and backfills
publish backfill status on worker/ channel