Core and builtins
-----------------
+- Patch #1438387, PEP 328: relative and absolute imports. Imports can now be
+ explicitly relative, using 'from .module import name' to mean 'from the same
+ package as this module is in. Imports without dots still default to the
+ old relative-then-absolute, unless 'from __future__ import
+ absolute_import' is used.
+
- Properly check if 'warnings' raises an exception (usually when a filter set
to "error" is triggered) when raising a warning for raising string
exceptions.