chore(release): 1.2.0-beta.4 [skip ci]
chore(release): 1.2.0-beta.4 [skip ci]

# [1.2.0-beta.4](https://github.com/Realytics/fork-ts-checker-webpack-plugin/compare/v1.2.0-beta.3@beta...v1.2.0-beta.4@beta) (2019-04-23)

### Bug Fixes

* **tests:** fix linter tests that were doing nothing ([d078278](https://github.com/Realytics/fork-ts-checker-webpack-plugin/commit/d078278))
* **tests:** linter tests - useTypescriptIncrementalApi usage ([e0020d6](https://github.com/Realytics/fork-ts-checker-webpack-plugin/commit/e0020d6))

### Features

* **apiincrementalchecker:** improve generation of diagnostics ([ae80e5f](https://github.com/Realytics/fork-ts-checker-webpack-plugin/commit/ae80e5f)), closes [#257](https://github.com/Realytics/fork-ts-checker-webpack-plugin/issues/257)

Realytics/fork-ts-checker-webpack-plugin,Realytics/fork-ts-checker-webpack-plugin