Update chart.js to version 2.2.1 🚀

[greenkeeperio-bot]

Hello lovely humans,

chart.js just published its new version 2.2.1.

State	Update 🚀
Dependency	chart.js
New version	2.2.1
Type	devDependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of chart.js.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

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Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

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GitHub Release

This release fixes a line drawing bug identified in v2.2.0 along with a few other issues.

Bug Fixes

• Fixed a line drawing issue when the first or last points were null and the spanGaps option was turned on. #3056
• Fixed a typo in the docs #3030
• Fixed a crash when no data existed for a dataset in a doughnut chart #2631
• Recalculate the size of the time scale in the underlying units when the last tick is set. #2560 and #2964
• Fixed a typo in the colors section of the docs #3058 Thanks @benpdavison

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The new version differs by 1849 commits .

• ab66146 Prep for a v2.2.1 release
• cec8d8b Merge pull request #3064 from chartjs/fix/2560
• 1731620 Merge pull request #3065 from chartjs/fix/3056
• eb6124f Fix 2 line drawing issues and add new tests for these cases
• b86e42f Fix JS Hint warning
• 0bb2e47 Recalculate the size of the scale in units when the end point is changed.
• 7628d4c Merge pull request #3063 from chartjs/fix/2631
• 51518a7 Handle possibility of a undefined arc element in the doughnut chart
• a0edfb6 Merge pull request #3062 from chartjs/fix/3030
• 8e3abe1 Fix docs typo
• 4279b20 Merge pull request #3058 from benpdavison/patch-1
• 5e69ecc small typo
• dfba30b Create thankyou.md
• b92387c Version bump for v2.2.0
• 7b1ce01 Merge pull request #3052 from chartjs/fix/3043

There are 250 commits in total. See the full diff.

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This pull request was created by greenkeeper.io.

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