added slots in asset model, yield with assests for api
added migration
fix models name
added is_deprecated() to asset model, fix tests
added is_deprecated() to asset model, fix tests
change slot field as FloatFiled
fix migration
Merge pull request #5 from wmatyskiewicz/api

added slots in asset model, yield with assets for api, fixed migrations
Initial work on imports
Merge branch 'master' of https://github.com/allegro/ralph_assets
Work in progress