If you tap near a tight cluster of annotations, the annotation directly beneath your finger should be selected first. Previously, the annotations within the query bounds would be selected in order from oldest to newest, which was counterintuitive. The new behavior does sometimes make it more difficult to cycle through the entire cluster, but the previous behavior often got in the way anyways, as your finger would wind up atop a callout view for an annotation farther south.
Also updated the changelog.
Decreased hit test padding for annotation selection, since the query no longer depends on it. Fixed an assertion failure when selecting an annotation while the user dot is selected. Fixed an issue where selecting a selected user dot deselected it. Fixed an issue where the user dot’s callout positioning rect was off-center and a little too high.
MGLMapView now maps “annotation tags” (Cocoa-speak for numeric annotation IDs) to context objects that pair annotations with their identifiers. Previously, MGLMapView mapped the annotation objects themselves to context objects that contained annotation IDs, but this caused most operations involving annotations to be rather expensive: since mbgl tracks annotations by ID, most of the time you know the ID and need either the annotation or some piece of metadata about it.
Along for the ride, geographic methods and support for alignment rect insets on annotation images have been ported from #3135 for OS X. Hit testing now works much like in #3135, with the exception that UIKit doesn’t support hit testing based on pixel opacity. -convertRect:toLatLngBoundsFromView: returns a world-spanning bounds when the world is wrapping.
Fixes#3159.
Added aliases for std::chrono typedefs (eg. 'Seconds' for
std::chrono::seconds). These aliases are used together with templated
helper functions to replace time_t with std::chrono::seconds for most
cases, in particular for 'modified' and 'expires' values in Response.
