Document breaking change from maplibre#244 (maplibre#247)

depends on maplibre#244

---------

Co-authored-by: Julian Bissekkou <36447137+JulianBissekkou@users.noreply.github.com>

CHANGELOG.md

@@ -1,3 +1,14 @@
+## upcoming version
+
+### Breaking Change:
+* The default for `myLocationRenderMode` was changed from `COMPASS` to `NORMAL` in https://github.com/maplibre/flutter-maplibre-gl/pull/244, since the previous default value of `COMPASS` implicitly enables displaying the location on iOS, which could crash apps that didn't want to display the device location. If you want to continue to use `MyLocationRenderMode.COMPASS`, please explicitly specify it in the constructor like this:
+```dart
+MaplibreMap(
+ myLocationRenderMode: MyLocationRenderMode.COMPASS,
+ ...
+)
+```
+
 ## 0.16.0, Jun 28, 2022
 * cherry-picked all commits from upstream up to [https://github.com/flutter-mapbox-gl/maps/commit/3496907955cd4b442e4eb905d67e8d46692174f1), including up to release 0.16.0 from upstream
 * updated Maplibre GL JS for web

lib/src/mapbox_map.dart

@@ -163,7 +163,9 @@ class MaplibreMap extends StatefulWidget {
   /// `myLocationEnabled` needs to be true for values other than `MyLocationTrackingMode.None` to work.
   final MyLocationTrackingMode myLocationTrackingMode;
 
-  /// The mode to render the user location symbol
+  /// Specifies if and how the user's heading/bearing is rendered in the user location indicator.
+  /// See the documentation of [MyLocationRenderMode] for details.
+  /// If this is set to a value other than [MyLocationRenderMode.NORMAL], [myLocationEnabled] needs to be true.
   final MyLocationRenderMode myLocationRenderMode;
 
   /// Set the layout margins for the Mapbox Logo

maplibre_gl_platform_interface/lib/src/ui.dart

@@ -17,10 +17,15 @@ enum MyLocationTrackingMode {
   TrackingGPS,
 }
 
-/// Render mode
+/// Specifies if and how the user's heading/bearing is rendered in the user location indicator.
 enum MyLocationRenderMode {
+  /// Do not show the user's heading/bearing.
   NORMAL,
+
+  /// Show the user's heading/bearing as determined by the device's compass. On iOS, this causes the user's location to be shown on the map.
   COMPASS,
+
+  /// Show the user's heading/bearing as determined by the device's GPS sensor. Not supported on iOS.
   GPS,
 }