- PEP 3102: keyword-only arguments.
-- Int/Long unification is halfway complete. The 'long' built-in type
- hasn't been removed yet, and literals with trailing 'L' or 'l' are
- still recognized. Performance may be sub-optimal.
+- Int/Long unification is mostly complete. The 'long' built-in type
+ and literals with trailing 'L' or 'l' have been removed.
+ Performance may be sub-optimal (haven't really benchmarked).
- 'except E, V' must now be spelled as 'except E as V' and deletes V
at the end of the except clause; V must be a simple name.