super dupper system update (it runs)

wip/SNIP/client/websockets/http.py

@@ -0,0 +1,20 @@
+from __future__ import annotations
+
+import warnings
+
+from .datastructures import Headers, MultipleValuesError  # noqa: F401
+
+
+with warnings.catch_warnings():
+    # Suppress redundant DeprecationWarning raised by websockets.legacy.
+    warnings.filterwarnings("ignore", category=DeprecationWarning)
+    from .legacy.http import read_request, read_response  # noqa: F401
+
+
+warnings.warn(  # deprecated in 9.0 - 2021-09-01
+    "Headers and MultipleValuesError were moved "
+    "from websockets.http to websockets.datastructures"
+    "and read_request and read_response were moved "
+    "from websockets.http to websockets.legacy.http",
+    DeprecationWarning,
+)