message: Tympan: add flush()
diff: @@ -277,6 +277,7 @@ class TympanBase : public AudioControlTLV320AIC3206, public Print
  return count;
  }
  virtual size_t write(const char *str) { return write((const uint8_t *)str, strlen(str)); } //should use the faster write
  + virtual void flush(void) { USB_Serial->flush(); BT_Serial->flush(); }
  //using TympanPrint::print;
  //using TympanPrint::println;
  