Merge pull request peterhinch#91 from sandyscott/master

ESwitch: Fix bug where switch state was inverted.

Author: peterhinch

v3/primitives/events.py

@@ -72,7 +72,7 @@ async def _poll(self, dt):  # Poll the button
         while True:
             if (s := self._pin() ^ self._lopen) != self._state:  # 15μs
                 self._state = s
-                self._of() if s else self._cf()
+                self._cf() if s else self._of()
             await asyncio.sleep_ms(dt)  # Wait out bounce
 
     def _of(self):