Support newer Django

Now targeting current releases of Django. Support of older versions has been dropped.

Update

4.0.0

Back in business

Support constrained ImageField

Additional constraints specific to this field:

• `[min|max]upload[width|height]

Relase updates

• Django 2.0 support
• Extra distribution ensuring python-magic is installed
• Update setup.py and travis configs
• Fix for Django 1.8 (963c973)

Windows support for magic

Thanks to @epicfaace for his PR #7.

v3.0.6

Update messages and setup test config

Revamp

• Update Field
  • New name
  • Drop quota
  • Add javascript file size validator
• Update tests
  • Now working with latest versions of Python and Django
  • Integration with Travis CI