* Support go-to-definition for imports of scripts and arbitrary files
* Support go-to-definition for non-existent files
* Add missing file property
* Use `isExternalModuleNameRelative` instead of `!pathIsBareSpecifier`
* Add partial semantic test
* Combine with symbol search for non-source-file file references
* Fix and accept API baselines
* Fix useless or
* A definition is unverified if the file path was a guess, even if a source file has that path