Python 3

[jvc26]

This includes full Python 3 compatibility, and a rough testsuite to check that the changes work across python versions.

Highlights

• Supports Python 2.6+
• Now only supports Django 1.5+ (due to Python 2.6 requirement), and runs tests on Travis against all supported python versions and Django versions. South is always presumed to be latest version
• Supports TravisCI (this fork's builds can be found https://travis-ci.org/jvc26/django-colorful)
• Added RegexValidator to all field objects
• Few minor PEP8 changes

[charettes]

Hi @jvc26,

Thanks a lot for doing this, this is some really impressive work!

I left a couple of small comments, mostly nitpicks.

Once they are fixed I'll make sure to merge and issue a new release. Could you also create and AUTHORS file and added yourself? You definitely deserve credit for what you've done here.

[jvc26]

I think the latest set of commits address the above comments, will check back here if further issues - thanks!

[charettes]

Looking good, I'll merge!