add __future__ annoations

zachariahpifer · zachariahpifer · commit 50c712c8aa41 · 2023-04-25T15:49:37.000-06:00
diff --git a/adafruit_rockblock.py b/adafruit_rockblock.py
@@ -24,6 +24,8 @@
   https://github.com/adafruit/circuitpython/releases
 
 """
+from __future__ import annotations
+
 try:
     from typing import Tuple, Union, Optional
     from board import UART
