* Work better with custom projections (by [@andersarstrand](https://github.com/andersarstrand)) [#74](https://github.com/Leaflet/Leaflet.markercluster/issues/74)
* Allow spacing spiderfied icons further apart (Reported by [@stevevance](https://github.com/stevevance)) [#100](https://github.com/Leaflet/Leaflet.markercluster/issues/100)
* Add custom eachLayer that works (Reported by [@cilogi](https://github.com/cilogi)) [#102](https://github.com/Leaflet/Leaflet.markercluster/issues/102)
* Add an option (removeOutsideVisibleBounds) to prevent removing clusters that are outside of the visible bounds (by [@wildhoney](https://github.com/wildhoney)) [#103](https://github.com/Leaflet/Leaflet.markercluster/issues/103)
* Add getBounds method to cluster (Reported by [@nderambure](https://github.com/nderambure)) [#88](https://github.com/Leaflet/Leaflet.markercluster/issues/88)
* Lots of unit tests
* Support having Circle / CircleMarker as child markers
* Add factory methods (Reported by [@mourner](https://github.com/mourner)) [#21](https://github.com/Leaflet/Leaflet.markercluster/issues/21)
* Add getVisibleParent method to allow getting the visible parent cluster or the marker if it is visible. (By [@littleiffel](https://github.com/littleiffel)) [#102](https://github.com/Leaflet/Leaflet.markercluster/issues/102)
* Allow adding non-clusterable things to a MarkerClusterGroup, we don't cluster them. (Reported by [@benbalter](https://github.com/benbalter)) [#195](https://github.com/Leaflet/Leaflet.markercluster/issues/195)
* removeLayer supports taking a FeatureGroup (Reported by [@pabloalcaraz](https://github.com/pabloalcaraz)) [#236](https://github.com/Leaflet/Leaflet.markercluster/issues/236)
* Fix singleMarkerMode when you aren't on the map (by [@duncanparkes](https://github.com/duncanparkes)) [#77](https://github.com/Leaflet/Leaflet.markercluster/issues/77)
* Fix clearLayers when you aren't on the map (by [@duncanparkes](https://github.com/duncanparkes)) [#79](https://github.com/Leaflet/Leaflet.markercluster/issues/79)
* IE10 Bug fix (Reported by [@theLundquist](https://github.com/theLundquist)) [#86](https://github.com/Leaflet/Leaflet.markercluster/issues/86)
* Fixes for hasLayer after removing a layer (Reported by [@cvisto](https://github.com/cvisto)) [#44](https://github.com/Leaflet/Leaflet.markercluster/issues/44)
* Fix clearLayers not unsetting __parent of the markers, preventing them from being re-added. (Reported by [@apuntovanini](https://github.com/apuntovanini)) [#99](https://github.com/Leaflet/Leaflet.markercluster/issues/99)
* Fix map.removeLayer(markerClusterGroup) not working (Reported by [@Driklyn](https://github.com/Driklyn)) [#108](https://github.com/Leaflet/Leaflet.markercluster/issues/108)
* Fix map.addLayers not updating cluster icons (Reported by [@Driklyn](https://github.com/Driklyn)) [#114](https://github.com/Leaflet/Leaflet.markercluster/issues/114)
* Fix spiderfied clusters breaking if a marker is added to them (Reported by [@Driklyn](https://github.com/Driklyn)) [#114](https://github.com/Leaflet/Leaflet.markercluster/issues/114)
* Don't show coverage for spiderfied clusters as it will be wrong. (Reported by [@ajbeaven](https://github.com/ajbeaven)) [#95](https://github.com/Leaflet/Leaflet.markercluster/issues/95)
* Improve zoom in/out immediately making all everything disappear, still issues in Firefox [#140](https://github.com/Leaflet/Leaflet.markercluster/issues/140)
* Fix animation not stopping with only one marker. (Reported by [@Driklyn](https://github.com/Driklyn)) [#146](https://github.com/Leaflet/Leaflet.markercluster/issues/146)
* Various fixes for new leaflet (Reported by [@PeterAronZentai](https://github.com/PeterAronZentai)) [#159](https://github.com/Leaflet/Leaflet.markercluster/issues/159)
* Fix clearLayers when we are spiderfying (Reported by [@skullbooks](https://github.com/skullbooks)) [#162](https://github.com/Leaflet/Leaflet.markercluster/issues/162)
* Fix removing layers in certain situations (Reported by [@bpavot](https://github.com/bpavot)) [#160](https://github.com/Leaflet/Leaflet.markercluster/issues/160)
* Support calling hasLayer with null (by [@l0c0luke](https://github.com/l0c0luke)) [#170](https://github.com/Leaflet/Leaflet.markercluster/issues/170)
* Lots of fixes for removing a MarkerClusterGroup from the map (Reported by [@annetdeboer](https://github.com/annetdeboer)) [#200](https://github.com/Leaflet/Leaflet.markercluster/issues/200)
* Throw error when being added to a map with no maxZoom.
* Fixes for markers not appearing after a big zoom (Reported by [@arnoldbird](https://github.com/annetdeboer)) [#216](https://github.com/Leaflet/Leaflet.markercluster/issues/216) (Reported by [@mathilde-pellerin](https://github.com/mathilde-pellerin)) [#260](https://github.com/Leaflet/Leaflet.markercluster/issues/260)
* Fix coverage polygon not being removed when a MarkerClusterGroup is removed (Reported by [@ZeusTheTrueGod](https://github.com/ZeusTheTrueGod)) [#245](https://github.com/Leaflet/Leaflet.markercluster/issues/245)
* Allow customising the polygon generated for showing the area a cluster covers (by [@yohanboniface](https://github.com/yohanboniface)) [#68](https://github.com/Leaflet/Leaflet.markercluster/issues/68)