Bump mathjs from 2.7.0 to 7.2.0

[dependabot]

Bumps mathjs from 2.7.0 to 7.2.0.

Changelog

Sourced from mathjs's changelog.

2020-08-24, version 7.2.0

• Implemented new function diff, see #1634, #1920. Thanks @Veeloxfire.
• Implemented support for norm 2 for matrices in function norm. Thanks @rnd-debug.

2020-07-13, version 7.1.0

• Implement support for recursion (self-referencing) of typed-functions, new in typed-function@2.0.0. This fixes #1885: functions which where extended with a new data type did not always work. Thanks @nickewing.
• Fix #1899: documentation on expression trees still using old namespace math.expression.node.* instead of math.*.

2020-06-24, version 7.0.2

• Fix #1882: have DenseMatrix.resize and SparseMatrix.resize accept DenseMatrix and SparseMatrix as inputs too, not only Array.
• Fix functions sum, prod, min, and max not throwing a conversion error when passing a single string, like sum("abc").

2020-05-30, version 7.0.1

• Fix #1844: clarify the documentation of function eigs. Thanks @Lazersmoke.
• Fix #1855: Fix error in the documentation for math.nthRoots(x).
• Fix #1856: make the library robust against Object prototype pollution.

2020-05-07, version 7.0.0

Breaking changes:

• Improvements in calculation of the dot product of complex values. The first argument is now conjugated. See #1761. Thanks @m93a.
• Dropped official support for Node.js v8 which has reached end of life.
• Removed all deprecation warnings introduced in v6. To upgrade smoothly from v5 to v7 or higher, upgrade to v6 first and resolve all deprecation warnings.

2020-05-04, version 6.6.5

• Fix #1834: value Infinity cannot be serialized and deserialized. This is solved now with a new math.replacer function used as JSON.stringify(value, math.replacer).
• Fix #1842: value Infinity not turned into the latex symbol \\infty.

Commits

• 8e00dc3 Urgh. Revert to mocha 8.0.1 again because of karma issue
• e94379d Publish v7.2.0. Update devDependencies
• 2b6065e Update history and authors
• 97a56b8 feat: implementing norm 2 for matrices (#1931)
• 9e46226 Fix #1940: error in the documentation about resizing matrices
• 3d8d668 Revert to mocha@8.0.1 for now, 8.1.1 breaks the browserstack build
• 9bac11e Update devDependencies
• 2e0b37e Update devDependencies
• 80fb20f Fix some unit tests failing on IE 11
• 96330dd Update history and authors
• Additional commits viewable in compare view

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