Update sinon to version 2.1.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

sinon just published its new version 2.1.0.

State	Update 🚀
Dependency	sinon
New version	2.1.0
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 sinon.
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.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
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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The new version differs by 641 commits (ahead by 641, behind by 63).

• 9157d41 Update docs/changelog.md and set new release id in docs/_config.yml
• 17e735d Add release documentation for v2.1.0
• 90a5d8e 2.1.0
• db6e03b Update Changelog.txt and AUTHORS for new release
• a3eebd9 Build package as part of postversion step
• fd79000 Fix GitHub asset URL
• 6a7c801 Redesign the template (#1339)
• 354c84c Merge pull request #1337 from timcosta/add_called_immediately_before_after
• a957ef3 update spy names across four tests
• 3aa9919 [feature] adds spy.calledImmediatelyBefore and spy.calledImmediatelyAfter
• e401337 Merge pull request #1331 from mroderick/remove-next-release-from-docs
• af504b9 Remove documentation of the 2.x pre-releases
• 8bec6dd Remove @next instructions from documentation
• fc749fa Merge pull request #1333 from eauc/master
• 2058030 Add missing space from deprecated message (#1334)

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

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[coveralls]

Coverage increased (+0.3%) to 89.298% when pulling b6b60bd on greenkeeper-sinon-2.1.0 into 020295b on master.

[instantlinux]

replaced by #459