- Added support for nullish coalescing `A ?? B`.

- Annotation `/** @noSelf */` now also works directly on function declarations, not only on classes/interfaces.

- Fixed incorrect file paths in source maps.

- Fixed unknown node kind throwing an error instead of diagnostic.

- Fixed string index with side-effects being evaluated twice.

- Added check for node.js version when running tstl.

- Fixed some issues with reflection class names.

- Fixed incorrectly escaped variable names.

Under the hood:

- Switched from TSLint to ESLint.

- Added benchmarking capability for garbage collection.