v2.9.0

Add globe projection. This new projection displays the map as a 3d globe and can be enabled by either passing projection: globe to the map constructor or by calling map.setProjection('globe'). All layers are supported by globe except for Custom Layers and Sky.
Extend atmospheric fog with three new style specification properties: high-color, space-color and star-intensity to allow the design of atmosphere around the globe and night skies. (#11590)
Add a new line layer paint property in the style specification: line-trim-offset that can be used to create a custom fade out with improved update performance over line-gradient. (#11570)
Add an option for providing a geolocation adapter to GeolocateControl. (#10400) (h/t behnammodi)
Add Map.Title property to locale options to localise the map aria-label. (#11549) (h/t andrewharvey)
Allow duplicated coordinates in tile request URLs. (#11441) (h/t ozero)

Fix an issue which causes line layers to occasionally flicker. (#11848)
Fix markers in fog sometimes becoming more visible when behind terrain. (#11658)
Fix an issue where setting terrain exageration to 0 could prevent the zoom to be resolved. (#11830)
Copy stylesheet to allow toggling different styles using setStyle without overwriting some of the properties. (#11942)

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