anchor.diff:  // https://www.waveshare.com/wiki/E-Paper_ESP8266_Driver_Board
   //
   Future<bool> epaperUpload(Image image, String host) async {
  -  await makePostRequest(host+'/EPD', 'db');
  +  await makePostRequest(host + '/EPD', 'db');
   
     String pixels = "";
     var currentByte = 0x0;
  
positive.code:         pixels += String.fromCharCode(((l & 0x0f00) >> 12) + 97);
          pixels += "LOAD";
  
          await makePostRequest(host+'/LOAD', pixels);
  
          linecount += 1;
          pixels = "";
  
negative.code:   int statusCode = response.statusCode;
    String responseBody = response.body;
  }
  