Most but not all. I've only included the methods we're currently relying
on in migrations. This is another step towards decoupling from phinx for
the new backend.

it isn't used internally and I don't see a reason to maintain it.

It is unused internally.

I won't be able to fully refactor it away. There are conventions for
migration files that Inflector does not replicate.

The test stubs for Util don't need to adhere to coding standards as they
contain migration files from phinx.