Rate limiter: fix datetime parser (fixes #5)

utils.py

@@ -6,6 +6,7 @@ import platform
 import contextlib
 from functools import wraps
 from datetime import datetime, timezone
+from dateutil.parser import parse as parsedate
 
 def http_session_factory(headers={}, **kwargs):
 	user_agent = (
@@ -73,7 +74,7 @@ class _RateLimitContextManager(contextlib.AbstractAsyncContextManager):
 		if resp.headers.get('X-RateLimit-Remaining') not in {'0', '1'}:
 			return resp
 
-		await sleep_until(datetime.fromisoformat(resp.headers['X-RateLimit-Reset']))
+		await sleep_until(parsedate(resp.headers['X-RateLimit-Reset']))
 		await self._request_cm.__aexit__(*(None,)*3)
 		return await self.__aenter__()