* **deps:** update all non-major dependencies ([#4358](https://github.com/nuxt/nuxt.js/issues/4358)) ([45fdae0](https://github.com/nuxt/nuxt.js/commit/45fdae0))
* **server:** allow listening on number 0 port ([#4781](https://github.com/nuxt/nuxt.js/issues/4781)) ([602cf12](https://github.com/nuxt/nuxt.js/commit/602cf12))
* **server:** allow rendering urls with unicode characters ([#4512](https://github.com/nuxt/nuxt.js/issues/4512)) ([c3128ea](https://github.com/nuxt/nuxt.js/commit/c3128ea))
* **server:** Cannot read property client of null when webpackHMR & restarting Nuxt ([8a200f7](https://github.com/nuxt/nuxt.js/commit/8a200f7))
* **server:** process browser version with non semver versions ([#4673](https://github.com/nuxt/nuxt.js/issues/4673)) ([d3b9396](https://github.com/nuxt/nuxt.js/commit/d3b9396))
* add iron browser as modern ([#4775](https://github.com/nuxt/nuxt.js/issues/4775)) ([9eab558](https://github.com/nuxt/nuxt.js/commit/9eab558))
* csp SHA hashes accumulate when using custom script-src rules ([#4519](https://github.com/nuxt/nuxt.js/issues/4519)) ([683dbba](https://github.com/nuxt/nuxt.js/commit/683dbba))
* hmr in modern mode ([#4623](https://github.com/nuxt/nuxt.js/issues/4623)) ([df9b32a](https://github.com/nuxt/nuxt.js/commit/df9b32a))
* improvements for build and dev stability ([#4470](https://github.com/nuxt/nuxt.js/issues/4470)) ([fe05169](https://github.com/nuxt/nuxt.js/commit/fe05169))
* offer a new port and listen if already used, use consola on server error ([#4428](https://github.com/nuxt/nuxt.js/issues/4428)) ([1d78027](https://github.com/nuxt/nuxt.js/commit/1d78027))
* require serverMiddleware object with path and handler ([#4656](https://github.com/nuxt/nuxt.js/issues/4656)) ([8786ff7](https://github.com/nuxt/nuxt.js/commit/8786ff7))
* wrong devMiddleware in non-modern dev mode ([3515115](https://github.com/nuxt/nuxt.js/commit/3515115))
### Features
* **modern:** auto detect modern mode ([#4422](https://github.com/nuxt/nuxt.js/issues/4422)) ([fe492d8](https://github.com/nuxt/nuxt.js/commit/fe492d8))
* better stack traces for SSR error, show error with correct URL and use eventsource-polyfill ([#4600](https://github.com/nuxt/nuxt.js/issues/4600)) ([498c4f1](https://github.com/nuxt/nuxt.js/commit/498c4f1))
* disable compressor if set to false/undefined ([#4381](https://github.com/nuxt/nuxt.js/issues/4381)) ([e4140ce](https://github.com/nuxt/nuxt.js/commit/e4140ce))