ref: d79e79e33b434fb9dc21bbffcdc55662e6aeec7b dhall-ruby/test d---------
Add as_dhall refinement
Test typechecker edge cases
Run all dhal-lang typecheck tests
Run all dhall-last tests for cache_key
Run all dhall-lang tests for normalization
Pass all import tests
Allow self-describing CBOR
Allow imports to be either binary or source form
Update to latest dhall-lang
Add cache_key test runner
Anything we'll eventually run is a skip
Fix test to new binary format

No more null fragment
Use upstreamed type tests
Simplify binary tests for now
Fix style in tests
Forgot to add this file
Refactor Optional/None typecheck
Refactor Function annotate