Optimize hash function.
Optimize hash function.

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