updates cdb submodule with heatmaps
updates cdb submodule with heatmaps

dbirchak/cartodb,splashblot/dronedb,UCL-ShippingGroup/cartodb-1,CartoDB/cartodb,bloomberg/cartodb,UCL-ShippingGroup/cartodb-1,future-analytics/cartodb,raquel-ucl/cartodb,raquel-ucl/cartodb,future-analytics/cartodb,nuxcode/cartodb,codeandtheory/cartodb,nuxcode/cartodb,bloomberg/cartodb,splashblot/dronedb,DigitalCoder/cartodb,thorncp/cartodb,thorncp/cartodb,nyimbi/cartodb,CartoDB/cartodb,splashblot/dronedb,dbirchak/cartodb,splashblot/dronedb,UCL-ShippingGroup/cartodb-1,nyimbi/cartodb,dbirchak/cartodb,DigitalCoder/cartodb,DigitalCoder/cartodb,nyimbi/cartodb,future-analytics/cartodb,codeandtheory/cartodb,raquel-ucl/cartodb,DigitalCoder/cartodb,UCL-ShippingGroup/cartodb-1,bloomberg/cartodb,CartoDB/cartodb,CartoDB/cartodb,splashblot/dronedb,nuxcode/cartodb,future-analytics/cartodb,dbirchak/cartodb,nyimbi/cartodb,raquel-ucl/cartodb,nuxcode/cartodb,nyimbi/cartodb,bloomberg/cartodb,nuxcode/cartodb,future-analytics/cartodb,codeandtheory/cartodb,raquel-ucl/cartodb,bloomberg/cartodb,thorncp/cartodb,UCL-ShippingGroup/cartodb-1,thorncp/cartodb,thorncp/cartodb,DigitalCoder/cartodb,codeandtheory/cartodb,codeandtheory/cartodb,dbirchak/cartodb,CartoDB/cartodb