Update riot to version 2.4.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

riot just published its new version 2.4.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of riot – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 49 commits .

• 2cfbba8 2.4.0
• 56a6b3f updated: riot-route and release bump
• 47b3a15 updated: template engine
• 6eec476 updated: dependencies
• dab0796 updated: RegExp instead of indexOf to check the reserved methods/properties
• be6ef3e closes #1076
• 3ab55e7 fixed: unit test, crossbrowser SVGs support
• a5d5563 added: svg loops test
• 35ea40d added: svg support - closes #1199
• 9a918a2 Merge pull request #1741 from wintercounter/multiple-global-mixins
• b194404 Added ability to have multiple global mixins
• d1a804b updated: riot-observable
• 4b51137 added: benchmark dependency
• 850c9f6 updated: sync with the master
• dee66a4 updated: dev dependencies

There are 49 commits in total. See the full diff.

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