* 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
* Add test with bug
* Fix for import placement
* Consolidate comment recognition functions into utilities
* Add another test with all 3 kinds
* Recognize path directives as part of triple slash directives
* Also handle no-default-lib triple-slash comments
* Test for all the triple-slash kinds
* Keep import-placement logic in the quickfix, since its not really a node start; accept new baselines
* Work in not-ES6, use a real no-lib comment
* Remove no default lib triple slash comment, it disables checking and thereby quick fixes
* Copy regex rather than have a regex copy
* Add codefix for missing imports + tests
* Re-order and cleanup
* refactor
* make tests pass
* Make import specifier for new imports more comprehensive
* Fix existing import cases
* refactor
* Fix multiple import statement case
* add multiple code fixes and code action filtering and polishing
* not using the generic verify method for import fixes.
* Correct insert position for new imports
* improve the code action filtering logic
* Fix line ending issue
* cache where we can
