Update PEP 519 on implementation progress from PyCon US 2016 sprints

pep-0519.txt

@@ -321,28 +321,38 @@ This is the task list for what this PEP proposes to be changed in
 Python 3.6:
 
 #. Remove the ``path`` attribute from pathlib
-   (`done <http://bugs.python.org/issue22570>`_)
+   (`done <http://bugs.python.org/issue22570>`__)
 #. Remove the provisional status of pathlib
 #. Add ``os.PathLike``
+   (`code done <https://hg.python.org/lookup/e672cf63d08a>`__; needs docs)
 #. Add ``PyOS_FSPath()``
+   (`code done <https://hg.python.org/lookup/780cbe18082e>`__; needs docs)
 #. Add ``os.fspath()``
+   (`done <done <https://hg.python.org/lookup/780cbe18082e>`__)
 #. Update ``os.fsencode()``
+   (`done <https://hg.python.org/lookup/00991aa5fdb5>`__)
 #. Update ``os.fsdecode()``
+   (`done <https://hg.python.org/lookup/00991aa5fdb5>`__)
 #. Update ``pathlib.PurePath`` and ``pathlib.Path``
+   (`bug <http://bugs.python.org/issue27186>`__)
 
    #. Add ``__fspath__()``
    #. Add ``os.PathLike`` support to the constructors
 
 #. Update ``os.DirEntry``
+   (`bug <http://bugs.python.org/issue27186>`__)
 
    #. Add ``__fspath__()``
    #. Add ``os.pathLike`` support to the constructor
    #. Alias ``DirEntry`` to ``os.DirEntry``
-      (`bug <http://bugs.python.org/issue27038>`_)
+      (`bug <http://bugs.python.org/issue27038>`__)
 
 #. Update ``builtins.open()``
+   (`done <https://hg.python.org/lookup/254125a265d2>`__)
 #. Update ``os.path``
-#. Add a `glossary <https://docs.python.org/3.6/glossary.html>`_ entry for "path-like"
+   (http://bugs.python.org/issue27186)
+#. Add a `glossary <https://docs.python.org/3.6/glossary.html>`__ entry for "path-like"
+   (`bug <http://bugs.python.org/issue27186>`__)
 #. Update `"What's New" <https://docs.python.org/3.6/whatsnew/3.6.html>`_