Merge branch 'release/4.5.3' into develop
add tests for ip address
add small positive integer support
add test for django generic IP address field
add implementation not respecting django field parameters
add protocol support for django
add simple test to check FilePath field
add filepath generation for django
Move pylama settings to tox.ini
Support GenericIP in Django 1.4, 1.5
Update version
Merge branch 'release/4.5.4'