* Refactor Graphcache types

* Adjust type naming

* Fix up inaccurate types in Graphcache

- All lists (NullArray) may be nested, which affects links
- The same goes for any DataField values
- The __typename field isn't never defined on scalars
- All ScalarObject fields are unknown

Some of these features weren't used because they weren't
readily available yet in all common versions of TS back
when we wrote these types.

* Add Changeset

* Prevent increasing call count by n for link lists

* Fix readRootField and DataField types