Grunt release publishing [used to](https://github.com/karma-runner/karma/blob/master/gruntfile.js#L103) update `contributors` in `package.json`, but this feature has been lost during the migration to `semantic-release`. This PR restores the same logic in `semantic-release` plugin.

I considered using [semantic-release-contributors](https://www.npmjs.com/package/semantic-release-contributors) first, but it has couple of issues:
- it only adds contributors since last release, so can not restore contributors, who were missed while semantic-release was used for publishing
- it parses author data from commit and then serializes it back, which in some cases produces wrong results (e.g. David Jensen <david@frode.(none)> becomes an empty string, because parsing silently fails)

Because of the above issues I've re-implemented logic from the [Grunt plugin](https://github.com/vojtajina/grunt-npm/blob/master/tasks/npm.js#L90) as a semantic-release plugin and applied changes produced by it.

There are a many changes to existing contributors, because current logic sorts them by the amount of commits.

As it contains a breaking change per #3557.

Also added similar note for `dart` include type.

Fixes #3419

## [5.2.2](v5.2.1...v5.2.2) (2020-09-08)

### Bug Fixes

* revert source-map update ([#3559](#3559)) ([d9ba284](d9ba284)), closes [#3557](#3557)