* exit with proper error code on errors ([#4806](https://github.com/nuxt/nuxt.js/issues/4806)) ([a7ba73e](https://github.com/nuxt/nuxt.js/commit/a7ba73e))
* improvements for build and dev stability ([#4470](https://github.com/nuxt/nuxt.js/issues/4470)) ([fe05169](https://github.com/nuxt/nuxt.js/commit/fe05169))
* modern=true or false not work as expected ([#4378](https://github.com/nuxt/nuxt.js/issues/4378)) ([4c27088](https://github.com/nuxt/nuxt.js/commit/4c27088))
* **config:** define once default nuxt config filename ([#4814](https://github.com/nuxt/nuxt.js/issues/4814)) ([06a18ca](https://github.com/nuxt/nuxt.js/commit/06a18ca))
* **deps:** update all non-major dependencies ([#4358](https://github.com/nuxt/nuxt.js/issues/4358)) ([45fdae0](https://github.com/nuxt/nuxt.js/commit/45fdae0))
* **dev:** Show correct path when webpack watched files changed ([25dea5f](https://github.com/nuxt/nuxt.js/commit/25dea5f))
### Features
* **cli:** add `--devtools` option for build and generate ([#4357](https://github.com/nuxt/nuxt.js/issues/4357)) ([e6f73b5](https://github.com/nuxt/nuxt.js/commit/e6f73b5))
* **nuxt-ts:** typescript support improvements ([#4750](https://github.com/nuxt/nuxt.js/issues/4750)) ([dfaffc0](https://github.com/nuxt/nuxt.js/commit/dfaffc0))
* **test:** unit tests for core/config module ([#4760](https://github.com/nuxt/nuxt.js/issues/4760)) ([a616c09](https://github.com/nuxt/nuxt.js/commit/a616c09))
* modern=true or false not work as expected ([#4378](https://github.com/nuxt/nuxt.js/issues/4378)) ([ff7c083](https://github.com/nuxt/nuxt.js/commit/ff7c083))