updates cdb submodule with heatmaps
updates cdb submodule with heatmaps

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