Add DOM vector layer renderer
Add a canvas for FeatureOverlay and pre-/postcompose rendering
Issue #2802: Update OSM attribution
One OSM attribution
Merge pull request #2857 from tschaub/osm-attribution

Update the OSM attribution.
Document exportable vector source symbols
Merge pull request #2859 from tschaub/vector-doc

Document exportable vector source symbols.
Move touchstart preventDefault to ol.renderer.dom.Map

`preventDefault` is called to prevent the img context menu on mobile devices.
Add ol.renderer.dom.Map#disposeInternal
Merge pull request #2690 from ahocevar/layer-vectoroverlay

Vector rendering with the DOM renderer
Merge pull request #2855 from fredj/blur_preventDefault

Move touchstart preventDefault to ol.renderer.dom.Map
Add uriScheme parameter to Bing Maps metadata request to avoid mixed content
General purpose task for building external modules
Merge pull request #2864 from bartvde/bing-mixed-content

Avoid mixed content in Bing Maps (r=@elemoine)
Cluster source calls loadFeatures on vector source

Closes #2801
Merge pull request #2866 from elemoine/2801

Cluster source calls loadFeatures on vector source
Parse examples and build external modules on install
Add wrapper for the RBush
Remove doc about dispatching events
Add old value to property change events