Allow downstreams to hook into worker task validation at runtime
Allow downstreams to hook into worker task validation at runtime

Kitware/girder,data-exp-lab/girder,kotfic/girder,girder/girder,kotfic/girder,jbeezley/girder,manthey/girder,sutartmelson/girder,Xarthisius/girder,adsorensen/girder,jbeezley/girder,data-exp-lab/girder,manthey/girder,data-exp-lab/girder,adsorensen/girder,girder/girder,sutartmelson/girder,kotfic/girder,adsorensen/girder,kotfic/girder,manthey/girder,Xarthisius/girder,sutartmelson/girder,RafaelPalomar/girder,Kitware/girder,RafaelPalomar/girder,Xarthisius/girder,girder/girder,RafaelPalomar/girder,kotfic/girder,Xarthisius/girder,girder/girder,Kitware/girder,adsorensen/girder,sutartmelson/girder,sutartmelson/girder,jbeezley/girder,jbeezley/girder,data-exp-lab/girder,manthey/girder,data-exp-lab/girder,RafaelPalomar/girder,adsorensen/girder,Kitware/girder,Xarthisius/girder,RafaelPalomar/girder