Started adding tests around caching in order to start expiring it
More testing
Fix aggregation with complex WHERE bug

aggregation maps are now serialized to EDN before storing in the DB
Merge branch 'query-cache-where-bug' into query-expiration
Add cache wiping
Added ability to clean cache according to a function
Cached can now be created with cleaning functions
Cache cleanup now happens as part of the worker cycle
Merge pull request #104 from cndreisbach/query-expiration

Query cache expiration