resolves #12 Missing Type Annotations

Author: tcfranks

adafruit_il0398.py

@@ -50,7 +50,7 @@
 class IL0398(displayio.EPaperDisplay):
     """IL0398 driver"""
 
-    def __init__(self, bus, **kwargs):
+    def __init__(self, bus: displayio.FourWire, **kwargs) -> None:
         start_sequence = bytearray(_START_SEQUENCE)
 
         width = kwargs["width"]