Merge in all documentation changes since branching 3.4.0rc1.
diff --git a/Doc/library/xml.etree.elementtree.rst b/Doc/library/xml.etree.elementtree.rst
index dfa2b71..c6dbce0 100644
--- a/Doc/library/xml.etree.elementtree.rst
+++ b/Doc/library/xml.etree.elementtree.rst
@@ -952,7 +952,8 @@
    specified in the XML file.
 
    .. deprecated:: 3.4
-      The *html* argument.
+      The *html* argument.  The remaining arguments should be passed via
+      keywword to prepare for the removal of the *html* argument.
 
    .. method:: close()