Made Importers filter more generic
Made Importers filter more generic

proposal.tasks.pull_updates now takes a dictionary as its third argument, rather
than a string.

cityofsomerville/cornerwise,cityofsomerville/cornerwise,codeforboston/cornerwise,codeforboston/cornerwise,cityofsomerville/cornerwise,cityofsomerville/cornerwise,cityofsomerville/citydash,cityofsomerville/citydash,cityofsomerville/citydash,codeforboston/cornerwise,codeforboston/cornerwise,cityofsomerville/citydash