upgrade to mbtiles@0.8.2 and node-sqlite3@3.1
upgrade to mbtiles@0.8.2 and node-sqlite3@3.1

Zhao-Qi/tilemill,tilemill-project/tilemill,tilemill-project/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,Zhao-Qi/tilemill,tilemill-project/tilemill