Reading through the code/docs it looks like you can subscribe to individual records (database rows) or collections (tables), is this correct? In your Records.getList method, you have filter functionality that would be nice to subscribe to (ie. subscribe to changes in "demo" collection where totalComments > 10). Subscribing to a specific result set seems like it could scale better than notifying subscribers of all table changes, which then get filtered in the subscribe() callback func in the SDK. Very cool work!