Revert "Update to latest codegen"

This reverts commit d540f6a82afa64ae728eacfc48317587b376b14a.
Fix test when there is a lot of test data
Fix bug w/ readers for optional collections
Fix bugs in scala client related to optional collections
Fix validation error when adding new generator
Update to latest codegen
Update ruby client comment formatting / indentation
Update to latest ruby client
Merge pull request #231 from gilt/proper_readers

Proper readers