Don't cache (TEXT, Markup) events in serializers. This is not needed and since Markup instances compare equal to the same non-Markup string this can lead to incorrect cached output being retrieved. Fixes #429. This is patch t429-fix.2.patch from that ticket. It includes an additional unrelated test to check that the WhitespaceFilter actually removes ignorable whitespace.

#!/bin/sh
#
# Script to run 2to3 on files not covered by setup.py
#
export PYTHONIOENCODING=utf8

# General 2to3 run
2to3 -w --no-diffs examples/