Generate empty property hashes, if missing.
Generate empty property hashes, if missing.

maxogden/topojson,mbostock/topojson,hcxiong/topojson,ststeiger/topojson,lyhpcha/topojson,btahir/topojson,whoinlee/topojson,AlpinHologramm/topojson,ongerit/topojson,youprofit/topojson,koshlan/topojson,studiowangfei/topojson,tsl3su/WorldMap_Choropleth