Mark print conversion as mostly done.

pep-3100.txt

@@ -67,7 +67,7 @@ Core language
 * ``exec`` as a statement is not worth it -- make it a function [done]
 * (Maybe) add optional declarations for static typing [#pep3107]_ [10]_
 * Support only new-style classes; classic classes will be gone [1]_ [done]
-* Replace ``print`` by a function [14]_  [#pep3105]_
+* Replace ``print`` by a function [14]_  [#pep3105]_ [mostly done]
 * Use ``except E1, E2, E3 as err:`` if you want the error variable. [3]_
 * ``None`` becomes a keyword [4]_ (What about ``True``, ``False``?)
 * ``...`` to become a general expression element [16]_ [done]