are automatically mapped to the equivalent keys/values/items methods in Python 3
for typed dictionaries.
+* 2-value slicing of unknown objects passes the correct slice when the ``getitem``
+ protocol is used instead of the ``getslice`` protocol (especially in Python 3),
+ i.e. ``None`` values for missing bounds instead of ``[0,maxsize]``. It is also
+ a bit faster in some cases, e.g. for constant bounds. This fixes trac ticket 636.
+
* Slicing unicode strings, lists and tuples is faster.
* list.append() is faster on average.