The library creates and manages per-zoom-level clusters for large amounts of markers. This is an enhanced V3 implementation of the V2 MarkerClusterer by Xiaoxi Wu. It is based on the V3 MarkerClusterer port by Luke Mahe. MarkerClustererPlus was created by Gary Little. v2.0 release: MarkerClustererPlus v2.0 is backward compatible with MarkerClusterer v1.0. It adds support for the ignoreHidden, titl