changing the text on a label does not require a full repaint

src/Label.hpp

@@ -16,7 +16,7 @@ public:
     ~Label() {}
 
     std::string &get_text() { return m_text; }
-    void set_text(std::string text) { m_text = text; wants_full_repaint(); }
+    void set_text(std::string text) { m_text = text; wants_repaint(); }
 protected:
     void on_paint();
     void on_init();