Use modern asyncio bootstrap in examples (#466)

Author: frenck

README.md

@@ -48,8 +48,7 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())
 ```
 
 ## Changelog & Releases

examples/control.py

@@ -23,5 +23,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

examples/upgrade.py

@@ -16,5 +16,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())

examples/websocket.py

@@ -27,5 +27,4 @@ def something_updated(device: Device) -> None:
 
 
 if __name__ == "__main__":
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
+    asyncio.run(main())