girder_client: prefix internal methods and constants with underscore
girder_client: prefix internal methods and constants with underscore

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