Reorganized MGLMapViewDelegate and MGLAnnotationView symbols into sections by task. Wrapped documentation comments at column 80 for readability.
Added documentation for -mapViewWillStartRenderingFrame: and -mapViewDidFinishRenderingFrame:fullyRendered:, which are supported and behave as expected (except for the part that has been left undocumented). Synchronized iOS and macOS documentation for MGLMapViewDelegate. Added cross-references between annotation image and annotation view delegate methods and among the various callout delegate methods.
Added missing MGLAnnotationViewDragState documentation and also added the symbol to jazzy’s table of contents. Rewrote MGLAnnotationView documentation.
A verb doesn’t make sense in this enum value. Instead, use a descriptive word for this effect and describe it in detail in the documentation comment.
Cherry-picked from 415c182946.
