Todo
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Version Update
--------------

setup.py, __init__.py, README, CHANGES
- Make sure _build_tables was run in pycparser/
- Tag in git. When pushing to GitHub, git push --tags
- If PLY version changes, note it in README and ply/LICENSE
- Run tox tests

python setup.py sdist upload

Misc
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yacc optimization: 
- If parsetab.py/pyc doesn't exist in the path, the table will be reconstructed
  anyway, regardless of the optimize parameter
- If it does exist:
  - If optimize=True, the table will be loaded unconditionally
  - If optimize=False, the table will be loaded only if it's older than the grammar

lex optimization:
- If optimize=False, the lexical table is re-computed and is not saved to a lextab file
- If optimize=True:
  - If lextab.py/pyc exists in the path, it will be loaded unconditionally
  - If lextab.py/pyc doesn't exist, it will be created and loaded