Set default tablet tool to Pen

src/device/mouse.c

@@ -40,7 +40,7 @@ int mouse_x,
     mouse_buttons,
     mouse_mode,
     mouse_tablet_in_proximity = 0,
-    tablet_tool_type = 0; /* 0 = Puck/Cursor, 1 = Pen */
+    tablet_tool_type = 1; /* 0 = Puck/Cursor, 1 = Pen */
 
 double mouse_x_abs,
        mouse_y_abs;