Refactor to event system

examples/serial_infos.py

@@ -3,19 +3,15 @@
 import asyncio
 
 from meshcore import MeshCore
-from meshcore import SerialConnection
 
-PORT = "/dev/ttyUSB0"
+PORT = "/dev/tty.usbserial-583A0069501"
 BAUDRATE = 115200
 
-async def main () :
-    con  = SerialConnection(PORT, BAUDRATE)
-    await con.connect()
-    await asyncio.sleep(0.1) # time for transport to establish    
-
-    mc = MeshCore(con)
-    await mc.connect()
-
+async def main():
+    mc = await MeshCore.create_serial(PORT, BAUDRATE)
+    
     print(mc.self_info)
+    
+    await mc.disconnect()
 
 asyncio.run(main())