chhantyal/sorl-thumbnail-async — pull request #4 by intellisense (2014-08-11 22:10:47+00:00)
Title: Support to define THUMBNAIL_OPTIONS_DICT on per model basis

Some time we need to define different sizes based on different model. I have added the patch which will give higher importance to model level `THUMBNAIL_OPTIONS_DICT` if that is not defined always fall back to the `settings.OPTIONS_DICT`. How to use it:
```
class Image(AsyncThumbnailMixin, models.Model):
image_field_name = 'image'
THUMBNAIL_OPTIONS_DICT = {
'small': {
'geometry': '30x30',
'crop': 'center'
},
}
```