Added Update::Repaint

include/mbgl/map/map.hpp

@@ -73,7 +73,7 @@ public:
     void nudgeTransitions(bool forceRerender);
 
     // Notifies the Map thread that the state has changed and an update might be necessary.
-    void update(Update update = Update::Nothing);
+    void update(Update update);
 
     // Styling
     void addClass(const std::string&);

include/mbgl/map/update.hpp

@@ -14,6 +14,7 @@ enum class Update : UpdateType {
     Classes                   = 1 << 3,
     Zoom                      = 1 << 4,
     RenderStill               = 1 << 5,
+    Repaint                   = 1 << 6,
 };
 
 }