Property indexing

[unreadablewxy]

Let's expand & generalize the querying functionality of the system.

• The file system already serves as a good mechanism to do discrete querying. i.e. questions like "is there a file satisfying predicate P"
• The question then becomes, is there a good way to do intersections on predicates?
  • Sort-Merge-Join. Global ordering allows us to do this without needing to sort, cutting out a "N" out of the time complexity
  • Build sqlite indices. Not as appealing, but joins is what they're good at, so maybe we've finally found a valid purpose for them in this project?