Added Robot.cancelAll() and remapped some buttons similar to FRC.

TeamCode/src/main/java/teamcode/Robot.java

@@ -272,6 +272,20 @@ public class Robot
         }
     }   //updateStatus
 
+    /**
+     * This method is called to cancel all pending operations and release the ownership of all subsystems.
+     */
+    public void cancelAll()
+    {
+        globalTracer.traceInfo(moduleName, "Cancel all operations.");
+
+        if (robotDrive != null)
+        {
+            // Cancel all auto-assist driving.
+            robotDrive.cancel();
+        }
+    }   //cancelAll
+
     /**
      * This method zero calibrates all subsystems.
      *