Automatic merge of T1.5.1-372-g5db5c7824 and 11 pull requests

- Pull request #570 at de7a14f: Experimental glTF 2.0 support with PBR lighting
- Pull request #732 at 22f66dc: Improvements for air brakes
- Pull request #751 at 00981a2: Web interface to control cab controls with external hardware
- Pull request #799 at dc03850: Consolidated wind simulation
- Pull request #802 at 4d198e4: Added support for activity location events to the TrackViewer
- Pull request #803 at 7157e08: Various adjustments to steam adhesion
- Pull request #813 at 001e285: Refactored garbage generators
- Pull request #815 at a5cc165: chore: Add GitHub automatic release notes configuration
- Pull request #816 at eae646d: Bug fix for https://bugs.launchpad.net/or/+bug/2014992 EOT can't be dismounted after train reversal
- Pull request #818 at 1a709aa: Allow independent drive axles for locomotives
- Pull request #819 at 51b98b2: Headlight switch makes sound when not appropriate

Author: openrails-bot

Source/Orts.Simulation/Simulation/RollingStocks/SubSystems/PowerTransmissions/Axle.cs

@@ -50,7 +50,7 @@ public enum AxleDriveType
     /// Sums individual axle values to create a total value
     /// </summary>
 
-    public class Axles : IEnumerable<Axle>, ISubSystem<Axles>
+    public class Axles : ISubSystem<Axles>
     {
         /// <summary>
         /// List of axles
@@ -249,11 +249,7 @@ public void Update(float elapsedClockSeconds)
                 axle.Update(elapsedClockSeconds);
             }
         }
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            return AxleList.GetEnumerator();
-        }
-        IEnumerator<Axle> IEnumerable<Axle>.GetEnumerator()
+        public List<Axle>.Enumerator GetEnumerator()
         {
             return AxleList.GetEnumerator();
         }