Bump mathjs from 5.10.3 to 6.0.3

[dependabot-preview]

Bumps mathjs from 5.10.3 to 6.0.3.

Changelog

Sourced from mathjs's changelog.

2019-07-07, version 6.0.3

• Add unpkg and jsdelivr fields in package.json pointing to UMD build.
  Thanks @​tmcw.
• Fix #1550: nested user defined function not receiving variables of an
  outer user defined function.

2019-06-11, version 6.0.2

• Fix not being able to set configuration after disabling function import
  (regression since v6.0.0).

2019-06-09, version 6.0.1

• Fix function reference not published in npm library.
• Fix function evaluate and parse missing in generated docs.

2019-06-08, version 6.0.0

!!! BE CAREFUL: BREAKING CHANGES !!!

Most notable changes

1. Full support for ES6 modules. Support for tree-shaking out of the box.

   Load all functions:

   import * as math from 'mathjs'

   Use a few functions:

   import { add, multiply } from 'mathjs'

   Load all functions with custom configuration:

   import { create, all } from 'mathjs'
   const config = { number: 'BigNumber' }
   const math = create(all, config)

   Load a few functions with custom configuration:

... (truncated)

Commits

• bdccdaa Revert package-lock.json containing broken babel 7.5.0 dependencies
• dac78ea Publish v6.0.3
• deb7c05 Fix #1550: nested user defined function not receiving variables of an outer u...
• a8c8847 tie build status badge to master (#1559)
• 2fa3fc5 Update del to the latest version 🚀 (#1556)
• 9ff37bc Update webpack to the latest version 🚀 (#1553)
• 4ed20fb Update dependencies to enable Greenkeeper 🌴 (#1548)
• 7d9d465 Merge branch 'master' into develop
• 0fcbb15 Fix logo in readme
• ca93348 Update history and contributor list
• Additional commits viewable in compare view

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