Django-simple-captcha

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* Run most tests both with a regular Form and a ModelForm, to avoid regressions such as Issue 40
* Handle the special case where CaptchaFields are instantiated with required=False (Issue 42, thanks DrMeers)
* Fixed a misspelled setting, we now support both spellings, but the docs suggest the correct one (Issue 36, thanks sayadn)
* Added Django 1.6b to testrunner and adapted the test cases to support Django 1.6's new test discovery
* Added German translations. (Thanks digi604)
* Frozen the version of Pillow to 2.0.0, as 2.1.0 seems to be truncating the output image -- Issue 44, Thanks andruby
* Added Polish translations. (Thanks stilzdev)

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* Fixed a critical bug (Issue 40) that would generate two captcha objects, and the test would always fail. Thanks pengqi for the heads-up.

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* Improved Django 1.5 and Django HEAD (1.6) compatibility (thanks uruz)
* Python3 compatibility (requires six and Pillow >= 2.0)
* Added zh_CN localization (thanks mingchen)
* Make sure the generated challenge is a string type (the math challenge was probably broken -- Issue 33, thanks YDS19872712)
* Massive cleanup and refactoring (Issue 38, thanks tepez)
* Test refactoring to test a couple generators that weren't tested by default

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* Django 1.5 compatibility (only affects tests)
* Italian localization (thanks arjunadeltoso)
* Russian localization (thanks mikek)
* Fixed issue 17 - Append content-length to response (thanks shchemelevev)
* Merged PR 19 - AJAX refresh of captcha (thanks artofhuman)
* Merged PR 22 - Use op.popen instead of subprocess.call to generate the audio CAPTCHA (thanks beda42)
* Fixed issue 10 - uniformize spelling of "CAPTCHA" (thanks mikek)
* Fixed issue 12 - Raise error when try to initialize CaptchaTextInput alone and/or when try to initialize CaptchaField with widget keyword argument (thanks vstoykov)
* Merged PR 15 - Allow a 'test mode' where the string 'PASSED' always validates the CAPTCHA (thanks beda42)
* Dutch translation (thanks leonderijke)
* Turkish translation (thanks gkmngrgn)

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* Fixes issue 4: Fixes id_for_label malfunction with prefixed forms (thanks lolek09)

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* Fixes issue 3: regression on Django 1.4 when USE_TZ is False