Implement Lookups

Would it be possible to implement lookups for the database, so that .filter(birthday__yearlessdate_gte=(YearlessDate(12, 9)))
Note: I use a modified version of your code to have a dayless-date, so it might be possible that my examples/code snippets don't match with the intended usage.

[seddonym]

Hi and thanks for the issue request!

Offhand I would have thought this already works, but happy to consider a PR for this!

So yesterday I had the idea to just an IntergerField, which has lookups already included.
Looking at your code reveals that your fields use CharFields:

django-yearlessdate/djangoyearlessdate/models.py

Line 44 in 4a0c280

return 'CharField'

In my case I directly inherited from models.IntegerField and format my 'dayless-date' in %Y%m.

[seddonym]

Looking at your code reveals that your fields use CharFields.

They do indeed!

Sounds like you sorted out your issue?

I did, yes, actually, but lookups will work without any further changes if we use IntergerField as parent class, so this might be the way for this package as well.