Fix header import for arduino (#16)

jesserockz · web-flow · commit a4b71969f90d · 2022-10-26T23:40:33.000+13:00
diff --git a/src/improv.h b/src/improv.h
@@ -1,7 +1,7 @@
 #pragma once
 
 #ifdef ARDUINO
-#include "WString.h"
+#include <Arduino.h>
 #endif  // ARDUINO
 
 #include <cstdint>
