Major fixes and new features

venv/lib/python3.12/site-packages/asyncpg/protocol/cpythonx.pxd

@@ -0,0 +1,19 @@
+# Copyright (C) 2016-present the asyncpg authors and contributors
+# <see AUTHORS file>
+#
+# This module is part of asyncpg and is released under
+# the Apache 2.0 License: http://www.apache.org/licenses/LICENSE-2.0
+
+
+cdef extern from "Python.h":
+    int PyByteArray_Check(object)
+
+    int PyMemoryView_Check(object)
+    Py_buffer *PyMemoryView_GET_BUFFER(object)
+    object PyMemoryView_GetContiguous(object, int buffertype, char order)
+
+    Py_UCS4* PyUnicode_AsUCS4Copy(object) except NULL
+    object PyUnicode_FromKindAndData(
+        int kind, const void *buffer, Py_ssize_t size)
+
+    int PyUnicode_4BYTE_KIND