* Increase selectivity of subtype relationship for signatures
* Add regression test
* Accept new baselines
* Use strictSubtypeRelation for union subtype reduction
* (x: number | undefined) -> void is subtype of (x?: number | undefined) => void
* Accept new baselines
* Add tests
* Accept new baselines
* Address CR feedback
* Fix parameter list length check
* Accept API baseline changes
* Create different watch options in compiler options
* Thread through the new watch options
* Actually use the options passed through for watch strategy
* Support delay on updating child directory watches
* Make watchOptions separate from compilerOptions
* Support passing watch options from command line
* Handle displaying of watchOptions
