Supercluster Versions Save

• ⚠️ Removed clusterZoom argument from getLeaves, getChildren and getClusterExpansionZoom methods — it's now encoded into cluster_id numbers, so there's no longer a need to track it separately.
• ⚠️ As a result of the change above, the same data will have different cluster_id numbers compared to previous releases.
• Fixed getLeaves to properly handle features with null properties.
• Improved handling of null geometries (supercluster will ignore them instead of throwing an error).
• Imrpoved error reporting — specifying invalid cluster_id will now result in a descriptive error.

• Added cluster properties aggregation through initial, map and reduce options. #36
• Added getChildren method for getting children of a cluster on the next zoom. #31
• Added getLeaves method for getting points of a cluster with pagination support. #19
• Added getClusterExpansionZoom for getting the zoom where cluster expands (useful for "click to zoom" feature). #33
• Slightly improved performance.

• Fixed clipping of clusters near the date line. #16
• Fixed the demo not working in Firefox. #20

• Improved performance by at least 2 times by switching to a faster spatial index (kdbush).
• Improved cluster placement by using weighted centers in all calculations.

• Fixed a bug in getTile when requesting tiles higher than maxZoom

• Renamed numPoints cluster property to point_count
• Renamed numPointsH cluster property to point_count_abbreviated
• Added tests.

Initial release.