New types Exact (#259) 9394d54 ReadonlyTuple (#383) f445cc6 Replace (#389) 5c793ce Improvements Rename Mutable to Writable (#398) 638d597 Mutable still works and is now just a deprecated alias. Fixes Fix deep properties of PackageJson and TsConfigJson (#269) f2aae51 v2.12.2...v2.13.0
