Switch to SQLite

[ethanmick]

Core Data is a mess of crying and death.

[ethanmick]

Core Data hasn't lived up to it's potential here. Behind the scenes, it's just using SQLite anyways.

Using Mantle with core data was cool, but I don't think it provides very much. We can just use Mantle to turn JSON objects into model objects, and save them with SQLite. With some subclassing work, I think this will work great.

Also, we can then ensure our queries are as efficient as possible, and put the proper indexes on columns for really fast data workage.

If all else fails, I'll make another table.

[ethanmick]

https://github.com/ccgus/fmdb