Show an issue with ol.structs.RBush

Note that the same test passes in the original implementation.
Do not ascend when node has more siblings
Verify that removing random extent nodes also works
Add crossOrigin option to ol.source.OSM options
Add OpenSeaMap layer to localized-openstreetmap example
Merge pull request #1351 from twpayne/openseamap

Add crossOrigin option to ol.source.OSM options
Use ol.extent.* functions in ol.source.MapGuide
Add displayDpi option to ol.source.MapGuide constructor
Add ol.source.MapGuide.getScale function
Merge pull request #1388 from fredj/mapguide-cleanup

Mapguide cleanup
Add ol.structs.RBush#getExtent
Merge pull request #1391 from twpayne/rbush-get-extent

Add ol.structs.RBush#getExtent
Merge remote-tracking branch 'openlayers/master' into vector-api
Truthy check is enough
Merge pull request #1373 from ahocevar/rbush-fail

ol.structs.RBush#remove() is unreliable
Add collinsBart and ordnanceSurvery styles to bing-maps example
Merge pull request #1392 from twpayne/bing-uk-maps

Add collinsBart and ordnanceSurvery styles to bing-maps example
Merge remote-tracking branch 'openlayers/master' into vector-api
Add pixelRatio to ol.source.Image#getImage
Add pixelRatio to ol.source.Image#createImage