Adding CompositeBitField and tests.
Merge pull request #7 from dgouldin/master

Adding CompositeBitField
Improvements to default form and general cleanup.

Change default form to render using checkboxes rather than an integer field
and refactored code structure.
Version bump to 1.5.0
Remove all code from __init__ and import it from its correct locations
Clean up test command
Switch to django-nose for running tests
Require nose as part of setup requires
use the db_column attribute of a model field if set
https://docs.djangoproject.com/en/dev/ref/models/fields/#db-column
added db_column attribute check in tests
Merge pull request #9 from flyingeek/db_column_fix

use the db_column attribute of a model field if set
Fixed formfield widget init bug
Merge pull request #12 from dikbrouwer/master

Widget argument not correctly passed on to super
Fix the form field display as checkboxes.
How to get the widget in the admin.
Fix markup display.
Fix markup display.
django 1.4
Merge branch 'master' of git://github.com/streeter/django-bitfield
Support for django 1.2 to 1.4, added travis-ci conf