* Make ChangeTracker#newLineCharacter public, to avoid having to pass newLineCharacter around as a parameter
* Don't require newLineCharacter as input to ChangeTracker methods, and make it private again
* Fix#19959 and #19958: Remove un-localizable messages
* Update message
* Reorder error messages
* Fix https://github.com/Microsoft/TypeScript/issues/15399: remove periods at the end of messages
* Accept baselines for error code changes
* accept baselines for removed periods
* Update diagnostic messages