Check-manifest

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- Fix WindowsError due to git submodules in subdirectories
(`73 <https://github.com/mgedmin/check-manifest/pull/73>`__).
Contributed by Loren Gordon.

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* New config/command line option to ignore bad ideas (ignore-bad-ideas)
(`issue 67 <https://github.com/mgedmin/check-manifest/issues/67>`__).
Contributed by Brecht Machiels.

* Files named ``.hgsigs`` are ignored by default. Contributed by Jakub Wilk.

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- Drop Python 3.2 support.

- Ignore commented-out lines in MANIFEST.in
(`issue 66 <https://github.com/mgedmin/check-manifest/issues/66>`__).

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* Support git submodules
(`issue 61 <https://github.com/mgedmin/check-manifest/issues/61>`__).

* Revert the zc.buildout support hack from 0.26 because it causes breakage
(`issue 56 <https://github.com/mgedmin/check-manifest/issues/56>`__).

* Improve non-ASCII filename handling with Bazaar on Windows.

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* Fix --python with just a command name, to be found in path (`issue 57
<https://github.com/mgedmin/check-manifest/issues/57>`__).

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* Fix detection of git repositories when .git is a file and not a directory (`53
<https://github.com/mgedmin/check-manifest/pull/53>`__). One situation
where this occurs is when the project is checked out as a git submodule.

* Apply ignore patterns in subdirectories too (`54
<https://github.com/mgedmin/check-manifest/issues/54>`__).