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Changes

Upcoming release

Fixed bug that was causing MKOverlayViews/MKOverlayRenderers to not show up (thanks to rosskines for the pull request)
Settings UI in example to configure clustering
Updated annotation view in example to use pre-rendered images instead of drawRect: for best performance

1.4.0

Added removeAnnotations:withCompletionHandler: to CCHMapClusterController to remove annotations from clustering (thanks to zeyadsalloum for suggesting this feature)
Fixed bug when rotating map view

1.3.0

Added new delegate method mapClusterController:willReuseMapClusterAnnotation: to CCHMapClusterControllerDelegate that's called when cluster annotations are reused
Example updated to demonstrate annotation views which adapt to current cluster size
Bugfixes and performance improvements
Thanks to onato for suggesting these changes

1.2.0

Switched to quad tree based on TBQuadTree to speed up performance
Clustering now happens on a background thread for improved responsiveness
Fixed issues when panning across the 180th meridian

1.1.0

Added option to configure positioning of cluster annotations
Added option to enable/disable reusing existing cluster annotations
Added option to configure how cluster annotations are animated
Added more unit tests and documentation

1.0.1

Initial release