Add a separate set of test cases for the cache_fetch_includes traversal
Add the debugger to the gemfile for development
Allow passing options to fetch_multi. The only key so far is :includes which will specify more associations to fetch upon miss (or cache deactivation) during the batch record load.
Break out the associations needing population into its own method for clarity and move the dev dependency on debugger into the gemspec
Merge pull request #18 from Shopify/requested_includes

Requested includes