Added additional data set from TBAnnotationCluster example that contains 80000+ items
Updated license info
Avoid updating clusters while zooming/panning
Set deployment target to iOS 6.0
Fixed cell size if points span 180th merdian
Wrap around the origin's longitude and fix display issue with debug polygons
Make cell size multiple of world size so that cells wrap around at the 180th merdian
Added unit test for CCHMapClusterControllerAlignMapLengthToWorldWidth