Core and Builtins
-----------------
+ - Issue #13629: Renumber the tokens in token.h so that they match the indexes
+ into _PyParser_TokenNames.
+
+- Issue #13752: Add a casefold() method to str.
+
+- Issue #13761: Add a "flush" keyword argument to the print() function,
+ used to ensure flushing the output stream.
+
+- Issue #13645: pyc files now contain the size of the corresponding source
+ code, to avoid timestamp collisions (especially on filesystems with a low
+ timestamp resolution) when checking for freshness of the bytecode.
+
+- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to
+ subgenerators (initial patch by Greg Ewing, integration into 3.3 by
+ Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)
+
+- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix
+ as well as ``br``.
+
+- Issue #12736: Use full unicode case mappings for upper, lower, and title case.
+
+- Issue #12760: Add a create mode to open(). Patch by David Townshend.
+
+- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().
+
+- Issue #13577: Built-in methods and functions now have a __qualname__.
+ Patch by sbt.
+
+- Issue #6695: Full garbage collection runs now clear the freelist of set
+ objects. Initial patch by Matthias Troffaes.
+
+- Fix OSError.__init__ and OSError.__new__ so that each of them can be
+ overriden and take additional arguments (followup to issue #12555).
+
- Fix the fix for issue #12149: it was incorrect, although it had the side
effect of appearing to resolve the issue. Thanks to Mark Shannon for
noticing.