Make sure SerialLCD does not show a splash screen

include/SerialLCD.h

     void clear(void);
     void setBacklight(uint8_t val);
     
+    void saveSplash(void);
+    void enableSplash(void);
+    void disableSplash(void);
+    
     // 0 no cursor, 1 underline, 2 blinking, 3 both
     void cursor(int style);
     

src/Functionality.cpp

     debug.println("Setting up LCD, please wait");
     delay(1000); // give LCD some time to boot
     lcd.init();
+    lcd.disableSplash();
     
 #ifdef DEBUG_WAIT_FOR_SERIAL_CONN
     lcd.write(0, "Waiting for serial");

src/SerialLCD.cpp

+// see https://github.com/sparkfun/SparkFun_SerLCD_Arduino_Library
+
 #include <Arduino.h>
 #include "SerialLCD.h"
 
     delay(LCD_DELAY);
 }
 
+void SerialLCD::saveSplash(void) {
+    lcd->write(0x7C);
+    lcd->write(0x0A);
+}
+
+void SerialLCD::enableSplash(void) {
+    lcd->write(0x7C);
+    lcd->write(0x30);
+}
+
+void SerialLCD::disableSplash(void) {
+    lcd->write(0x7C);
+    lcd->write(0x31);
+}
 void SerialLCD::write(const char *text) {
     lcd->print(text);
     delay(LCD_DELAY);