Migrate to Haneke

[tspecht]

Hi!

I recently tried out Haneke in a small sample project and really liked it! Now I would want to port a bigger project of mine to Haneke and have some questions on how to do it:

Currently I'm having a custom implementation which simply downloads images and stores them on disk. To map the images to their remote counterparts the filename is simply kept. When I would migrate I don't want the user to download the content again. Long story short: is there anyway I could run a custom migration once that would move all images that are already cached on disk into Haneke to make the transition seamless for the user?