Merge pull request #14 from jerryneedell/jerryn_refresh

remove unnecessary wait_for_frame call for CP5.0 compatibility

Author: tannewt

adafruit_slideshow.py

@@ -320,7 +320,6 @@ def advance(self):
             sprite = self._sprite_class(odb,
                                         pixel_shader=displayio.ColorConverter(), position=(0, 0))
         self._group.append(sprite)
-        self._display.wait_for_frame()
 
         self._fade_up()
         self._img_start = time.monotonic()