Django-markupfield

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- fix Django 1.3 DeprecationWarning

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- added a fix for MarkupField to work with South >= 0.7

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- added markup_choices option to MarkupField
- switch to tuple/list for setting markup_type, dict deprecated
- split markup detection into markupfield.markup
- escape_html option

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- fix bug when adding a MarkupField to an abstract model (github issue 1)

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- enable pygments support by default if it is installed

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- fixed bug with using MarkupField widgets on postgres backend
- correctly check markup_type when doing pre_save