Adding a script to assist in deprecation review

Given that the Hydra gem is pegged against specific versions other gems
When we update the Hydra gem and its underlying dependent gems
And we provide deprecation warnings via the Deprecation gem (extend
    Deprecation)
Then we should provide a list of files with a change in Deprecation
And provide some means for a huamn to review those changes

@WIP - This script is a bit raw, but will be helpful going forward.