PEP 540: Add Post History section

pep-0540.txt

@@ -984,6 +984,22 @@ variable to force UTF-8: see `perlrun
 UTF-8 per standard stream, on input and output streams, etc.
 
 
+Post History
+============
+
+* 2017-04: `[Python-Dev] Proposed BDFL Delegate update for PEPs 538 &
+  540 (assuming UTF-8 for *nix system boundaries)
+  <https://mail.python.org/pipermail/python-dev/2017-April/147795.html>`_
+* 2017-01: `[Python-ideas] PEP 540: Add a new UTF-8 mode
+  <https://mail.python.org/pipermail/python-ideas/2017-January/044089.html>`_
+* 2017-01: `bpo-28180: Implementation of the PEP 538: coerce C locale to
+  C.utf-8 (msg284764) <https://bugs.python.org/issue28180#msg284764>`_
+* 2016-08-17: `bpo-27781: Change sys.getfilesystemencoding() on Windows
+  to UTF-8 (msg272916) <https://bugs.python.org/issue27781#msg272916>`_
+  -- Victor proposed ``-X utf8`` for the :pep:`529` (Change Windows
+  filesystem encoding to UTF-8)
+
+
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