Bump mathjs from 4.2.2 to 5.4.2

[dependabot-preview]

Bumps mathjs from 4.2.2 to 5.4.2.

Changelog

Sourced from mathjs's changelog.

2019-01-25, version 5.4.2

• Fix math.format not working for BigNumbers with a precision above
  1025 digits (see #1385). Thanks ericman314.
• Fix incorrect LaTeX output of RelationalNode. Thanks rianmcguire.
• Fixed a bug the methods map, forEach, traverse, and transform
  of FunctionNode.

2019-01-10, version 5.4.1

• Fix #1378: negative bignumbers not formatted correctly.
• Upgrade fraction.js to version 4.0.12 (#1369).

2018-12-09, version 5.4.0

• Extended sum.js to accept a dimension input to calculate the sum over a
  specific axis. Thanks bnlcas.
• Fix #1328: objects can't be written multi-line. Thanks GHolk.
• Remove side effects caused by Unit.format and Unit.toString,
  making changes to the unit on execution. Thanks ericman314.

2018-12-03, version 5.3.1

• Fixed #1336: Unit.toSI() returning units with prefix like mm instead
  of m. Thanks ericman314.

2018-11-29, version 5.3.0

• Implemented function hasNumericValue. Thanks Sathish-kumar-Subramani.
• Fix #1326: non-ascii character in print.js.
• Fix #1337: math.format not working correctly with { precision: 0 }.
  Thanks dkenul.

2018-10-30, version 5.2.3

• Fixed #1293: non-unicode characters in escape-latex giving issues in some
  specific cases. Thanks dangmai.
• Fixed incorrect LaTeX output of function bitNot, see #1299. Thanks FSMaxB.
• Fixed #1304: function pow not supporting inputs pow(Unit, BigNumber).
• Upgraded dependencies (escape-latex@1.2.0)

2018-10-23, version 5.2.2

• Fixed #1286: Fixed unit base recognition and formatting for

... (truncated)

Commits

• f084bdf Publish v5.4.2
• 4204464 Fixed a bug the methods map, forEach, traverse, and transform
• 90a25a0 Merge branch 'develop' of github.com:josdejong/mathjs into develop
• aa2e245 Update history
• aa68442 Bignumber formatter fix (#1387)
• 144343e Merge branch 'develop' of github.com:josdejong/mathjs into develop
• da02514 Updated history
• 00d6101 Fix incorrect LaTeX output of RelationalNodes (#1383)
• ec0f9bd Publish v5.4.1
• a7e79a2 Update webpack to the latest version 🚀 (#1381)
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #120.