Replace get_event_loop() with get_running_loop() for asyncio compatib…

…ility (#211)

Signed-off-by: Tsuyoshi Hombashi <[email protected]>

dominate/dom_tag.py

@@ -23,7 +23,7 @@
 from collections import defaultdict, namedtuple
 from functools import wraps
 import threading
-from asyncio import get_event_loop
+from asyncio import get_running_loop
 from uuid import uuid4
 from contextvars import ContextVar
 
@@ -71,7 +71,7 @@ def _get_thread_context():
     context.append(("greenlet", greenlet.getcurrent()))
 
   try:
-    if get_event_loop().is_running():
+    if get_running_loop().is_running():
       # Only add this extra information if we are actually in a running event loop
       context.append(("async", _get_async_context_id()))
   # A runtime error is raised if there is no async loop...