Polib

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This version adds support for python 3 (thanks to Vinay Sajip).
polib now supports out-of-the-box any version of python ranging from 2.4 to latest 3.X version.
polib is now 5 years old ;) so the 0.7.X branch will be the last before the 1.X stable branch.

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- Better api, autodetected_encoding is no longer required to explicitly set the encoding (fixes issue 23),
- Fixed issue 24 Support indented PO files (thanks to François Poirotte).

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- Fixed issue 19 (Disappearing newline characters due to textwrap module),
- ensure wrapping works as expected.

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- Backported textwrap.TextWrapper._wrap_chunks that has support for the drop_whitespace parameter added in Python 2.6 (Fixes 18: broken compatibility with python 2.5, thanks jezdez).

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- fixed regression that prevented POFile initialization from data to work (issue 17).

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- polib is now `fully documented <http://polib.readthedocs.org>`_,
- switched from doctests to unit tests to keep the polib.py file clean,
- fixed issue 7 (wrapping issues, thanks jezdez),
- added a __eq__ method to _BaseFile (thanks kost BebiX),
- handle msgctxt correctly when compiling mo files,
- compiled mo files are now exactly the same as those compiled by msgfmt without using hash tables.