MGLGeoJSONSource should have a constructor without options:

[rmnblm]

Is there a reason that MGLGeoJSONSource hasn't a constructor without options:?
Because I often find my self using the constructor without the need of providing options.

MGLGeoJSONSource(identifier: "destinations", url: geoJSONURL, options: nil)

[boundsj]

Hi @rmnblm. MGLGeoJSONSource lost its option-less initializers in #6588. It will gain another initializer in #6302. We currently don't plan to add an option-less version of each designated initializer.

Happily, in Swift, you can mitigate this in your app by extending MGLGeoJSONSource and adding a convenience initializer to wrap MGLGeoJSONSource(identifier:URL:options:).