Add note about LV_INDEV_DRAG_THROW to lv_conf_templ.h
#define LV_INDEV_READ_PERIOD 50 /*Input device read period in milliseconds*/
#define LV_INDEV_POINT_MARKER 0 /*Mark the pressed points (required: USE_LV_REAL_DRAW = 1)*/
#define LV_INDEV_DRAG_LIMIT 10 /*Drag threshold in pixels */
-#define LV_INDEV_DRAG_THROW 20 /*Drag throw slow-down in [%]. Greater value means faster slow-down */
+#define LV_INDEV_DRAG_THROW 20 /*Drag throw slow-down in [%] (must be > 0). Greater value means faster slow-down */
#define LV_INDEV_LONG_PRESS_TIME 400 /*Long press time in milliseconds*/
#define LV_INDEV_LONG_PRESS_REP_TIME 100 /*Repeated trigger period in long press [ms] */
