* Add GitHub Actions

* (actions) fix typo

* (actions) add checkout

* Delete .travis.yml

…s#409)

* (README) replace travis badge by GH actions badge

* (Contributing) replace travis by GH Actions

* (npmignore) remove .travis.yml, add .github

* (actions) also test noetic

Bumps [socket.io](https://github.com/socketio/socket.io) from 2.2.0 to 4.0.1.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/master/CHANGELOG.md)
- [Commits](socketio/socket.io@2.2.0...4.0.1)

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* Accept ros distro as argument in Dockerfile

* /opt/ros is already sourced by ~/.bashrc

* (actions) pass ros_distro to docker build

* (actions) [temp] remove noetic

Waiting for release of tf2_web_republisher

Bumps [xmldom](https://github.com/xmldom/xmldom) from 0.1.31 to 0.5.0.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@v0.1.31...0.5.0)

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Bumps [grunt-contrib-jshint](https://github.com/gruntjs/grunt-contrib-jshint) from 1.1.0 to 3.0.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-jshint/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-jshint/blob/master/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-jshint/commits)

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Bumps [grunt-karma](https://github.com/karma-runner/grunt-karma) from 2.0.0 to 4.0.0.
- [Release notes](https://github.com/karma-runner/grunt-karma/releases)
- [Changelog](https://github.com/karma-runner/grunt-karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/grunt-karma@v2.0.0...v4.0.0)

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Bumps [grunt-mocha-test](https://github.com/pghalliday/grunt-mocha-test) from 0.12.7 to 0.13.3.
- [Release notes](https://github.com/pghalliday/grunt-mocha-test/releases)
- [Commits](pghalliday/grunt-mocha-test@0.12.7...0.13.3)

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Bumps [karma-mocha](https://github.com/karma-runner/karma-mocha) from 1.3.0 to 2.0.1.
- [Release notes](https://github.com/karma-runner/karma-mocha/releases)
- [Changelog](https://github.com/karma-runner/karma-mocha/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma-mocha@v1.3.0...v2.0.1)

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Bumps [karma](https://github.com/karma-runner/karma) from 3.1.4 to 6.3.2.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma@v3.1.4...v6.3.2)

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Bumps [time-grunt](https://github.com/sindresorhus/time-grunt) from 1.4.0 to 2.0.0.
- [Release notes](https://github.com/sindresorhus/time-grunt/releases)
- [Commits](sindresorhus/time-grunt@v1.4.0...v2.0.0)

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Bumps [grunt-contrib-uglify](https://github.com/gruntjs/grunt-contrib-uglify) from 1.0.2 to 5.0.1.
- [Release notes](https://github.com/gruntjs/grunt-contrib-uglify/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-uglify/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt-contrib-uglify@v1.0.2...v5.0.1)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Bumps [grunt-contrib-clean](https://github.com/gruntjs/grunt-contrib-clean) from 1.1.0 to 2.0.0.
- [Release notes](https://github.com/gruntjs/grunt-contrib-clean/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-clean/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt-contrib-clean@v1.1.0...v2.0.0)

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Bumps [mocha](https://github.com/mochajs/mocha) from 2.5.3 to 8.3.2.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v2.5.3...v8.3.2)

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Bumps [grunt-browserify](https://github.com/jmreidy/grunt-browserify) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/jmreidy/grunt-browserify/releases)
- [Changelog](https://github.com/jmreidy/grunt-browserify/blob/master/CHANGELOG.md)
- [Commits](jmreidy/grunt-browserify@v5.3.0...v6.0.0)

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Bumps [karma-firefox-launcher](https://github.com/karma-runner/karma-firefox-launcher) from 1.3.0 to 2.1.0.
- [Release notes](https://github.com/karma-runner/karma-firefox-launcher/releases)
- [Changelog](https://github.com/karma-runner/karma-firefox-launcher/blob/master/CHANGELOG.md)
- [Commits](karma-runner/karma-firefox-launcher@v1.3.0...v2.1.0)

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Bumps [load-grunt-tasks](https://github.com/sindresorhus/load-grunt-tasks) from 3.5.2 to 5.1.0.
- [Release notes](https://github.com/sindresorhus/load-grunt-tasks/releases)
- [Commits](sindresorhus/load-grunt-tasks@v3.5.2...v5.1.0)

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* Update/lint CONTRIBUTING

* Lint README

* Update nvm version in Dockerfile

* (Dockerfile) convert node_version to arg

* (Dockerfile) small syntax change

* (actions) make node_version configurable

Branches need to be up-to-date, so pull_request and push are the same

Bumps [xmldom](https://github.com/xmldom/xmldom) from 0.5.0 to 0.6.0.
- [Release notes](https://github.com/xmldom/xmldom/releases)
- [Changelog](https://github.com/xmldom/xmldom/blob/master/CHANGELOG.md)
- [Commits](xmldom/xmldom@0.5.0...0.6.0)

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npm 7 does this automatically

* Add support for custom encoding/decoding.

* Remove whitespace

Co-authored-by: Matthijs van der Burgh <MatthijsBurgh@outlook.com>
Co-authored-by: Jihoon Lee <jihoonlee.in@gmail.com>

* (test) update scripts

* (test) run general tests

* Fix linting

* Change build process; Check build is in sync with library

* Start Xvfb if no display is available

* xvfb should not be enforced in package.json

* (test) nice iterator array

* fix bash linting of build script

* Fix: check for changed build

* Move test configs to Grunt

* Use Firefox Headless instead of Xvfb

* (test) improve visibilitiy of prints

* Build; add package-lock.json

* Remove bower.json

Bumps [mocha](https://github.com/mochajs/mocha) from 8.3.2 to 8.4.0.
- [Release notes](https://github.com/mochajs/mocha/releases)
- [Changelog](https://github.com/mochajs/mocha/blob/master/CHANGELOG.md)
- [Commits](mochajs/mocha@v8.3.2...v8.4.0)

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Bumps [socket.io](https://github.com/socketio/socket.io) from 4.0.1 to 4.0.2.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/master/CHANGELOG.md)
- [Commits](socketio/socket.io@4.0.1...4.0.2)

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* Widen package requirements

As suggested in RobotWebTools#437 (comment)

* Fix wrong socket.io version

Bumps [grunt-karma](https://github.com/karma-runner/grunt-karma) from 4.0.0 to 4.0.2.
- [Release notes](https://github.com/karma-runner/grunt-karma/releases)
- [Changelog](https://github.com/karma-runner/grunt-karma/blob/master/CHANGELOG.md)
- [Commits](karma-runner/grunt-karma@v4.0.0...v4.0.2)

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Bumps [socket.io](https://github.com/socketio/socket.io) from 4.0.0 to 4.1.1.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/master/CHANGELOG.md)
- [Commits](socketio/socket.io@4.0.0...4.1.1)

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Bumps [socket.io](https://github.com/socketio/socket.io) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/socketio/socket.io/releases)
- [Changelog](https://github.com/socketio/socket.io/blob/master/CHANGELOG.md)
- [Commits](socketio/socket.io@4.1.1...4.1.2)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>