Change node versions (#1845)
Change node versions (#1845)

* Update devDependencies

* Fixed `eigs` not using `config.epsilon` (see #1789)

* Should be able to take NAMED_DELIMITER as object keys (#1798)

Co-authored-by: Jos de Jong <59a98748561b5cb9fc928afd2763d3591de2155c@gmail.com>

* Update history

* Clarify the documentation on `scope` when using `rawArgs`, see #1055

* Bump @babel/preset-env from 7.9.0 to 7.9.5 (#1810)

Bumps [@babel/preset-env](https://github.com/babel/babel) from 7.9.0 to 7.9.5.
- [Release notes](https://github.com/babel/babel/releases)
- [Changelog](https://github.com/babel/babel/blob/master/CHANGELOG.md)
- [Commits](https://github.com/babel/babel/compare/v7.9.0...v7.9.5)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>

* Prefix the cli test with 'node' so it works on windows (#1807)

* Prefix the cli test with 'node' so it works on windows

Shouldnt provide any issues for other systems I hope

* Revert "Prefix the cli test with 'node' so it works on windows"

This reverts commit 4cd270493aeba0a9fad1661258c7ccc286934f53.

* Revert "Revert "Prefix the cli test with 'node' so it works on windows""

This reverts commit 268b5949a817fd416dbada72f1334ccaac0e3dfa.

Co-authored-by: Jos de Jong <59a98748561b5cb9fc928afd2763d3591de2155c@gmail.com>

* Fix #1808: `toNumber()` not working on a unitless unit (#1811)

* Update history

* Fix #1813: bug in engineering notation for numbers of function `format`, sometimes resulting in needless trailing zeros

* Improve explanation of engineering notation in function format

* Publish v6.6.3

* Bump uglify-js from 3.8.1 to 3.9.0 (#1816)

Bumps [uglify-js](https://github.com/mishoo/UglifyJS2) from 3.8.1 to 3.9.0.
- [Release notes](https://github.com/mishoo/UglifyJS2/releases)
- [Commits](https://github.com/mishoo/UglifyJS2/compare/v3.8.1...v3.9.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>

* Publish v6.6.4

* Bump uglify-js from 3.9.0 to 3.9.1 (#1818)

Bumps [uglify-js](https://github.com/mishoo/UglifyJS2) from 3.9.0 to 3.9.1.
- [Release notes](https://github.com/mishoo/UglifyJS2/releases)
- [Commits](https://github.com/mishoo/UglifyJS2/compare/v3.9.0...v3.9.1)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>

* Bump karma from 4.4.1 to 5.0.3 (#1830)

Bumps [karma](https://github.com/karma-runner/karma) from 4.4.1 to 5.0.3.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma/compare/v4.4.1...v5.0.3)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>

* Bump karma-mocha from 1.3.0 to 2.0.1 (#1832)

* Bump karma from 5.0.3 to 5.0.4 (#1839)

Bumps [karma](https://github.com/karma-runner/karma) from 5.0.3 to 5.0.4.
- [Release notes](https://github.com/karma-runner/karma/releases)
- [Changelog](https://github.com/karma-runner/karma/blob/master/CHANGELOG.md)
- [Commits](https://github.com/karma-runner/karma/compare/v5.0.3...v5.0.4)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>

Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>

* Bump mocha from 7.1.1 to 7.1.2 (#1827)

* Update devDependencies

* Fix #1834: value `Infinity` cannot be serialized and deserialized

* Fix broken bundle tests and linting issues

* Fix unit test on node 8 (yeah, I know)

* Fix #1842: value `Infinity` not turned into the latex symbol `\\infty`

* Publish v6.6.5

* Fix fixer.io example, the free plan doesn't support SSL

* Change node versions

Co-authored-by: jos <59a98748561b5cb9fc928afd2763d3591de2155c@gmail.com>
Co-authored-by: Veeloxfire <96803f95a7151e204d068ad7fe27e877583bb7db@users.noreply.github.com>
Co-authored-by: dependabot-preview[bot] <6a4c1c4838f800d1998274cd5234e1f65c55e90c@users.noreply.github.com>
FSMaxB/mathjs,FSMaxB/mathjs,FSMaxB/mathjs,FSMaxB/mathjs,josdejong/mathjs,josdejong/mathjs,josdejong/mathjs,josdejong/mathjs,josdejong/mathjs,FSMaxB/mathjs