Add open/close for sharedcache memory database
Add open/close for sharedcache memory database

tomhughes/node-sqlite3,tomhughes/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3,tomhughes/node-sqlite3,tomhughes/node-sqlite3,mapbox/node-sqlite3,tomhughes/node-sqlite3,tomhughes/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3,mapbox/node-sqlite3