Enable multiple drilldowns in treemap 
Enable multiple drilldowns in treemap 
RCGTDev/openspendingjs,openspending/openspendingjs,openspending/openspendingjs-old,RCGTDev/openspendingjs,openspending/openspendingjs,openspending/openspendingjs,RCGTDev/openspendingjs,openspending/openspendingjs-old,openspending/openspendingjs,openspending/openspendingjs-old,RCGTDev/openspendingjs,openspending/openspendingjs-old