Fetching Paged Images

Fetching records in CloudKit fetch the entire record, including downloading any associated assets. This makes it not feasible to fetch many records at a time. Instead, we'll see how to fetch a subset of each record, keeping the overall size of the request small. We'll also introduce paging to request a single visible set of records at a time.

This is a companion discussion topic for the original entry at https://nsscreencast.com/episodes/267-fetching-paged-images