set up cgminer get hostname, and fixed the bug with asyncio trying to close non socket objects

cfg_util/__init__.py

@@ -3,6 +3,11 @@ from cfg_util.layout import window
 from cfg_util.ui import ui
 
 import asyncio
+import sys
+
+# Fix bug with some whatsminers and asyncio because of a socket not being shut down:
+if sys.version_info[0] == 3 and sys.version_info[1] >= 8 and sys.platform.startswith('win'):
+    asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
 
 
 def main():