Update sinon to version 2.3.0 🚀

[greenkeeperio-bot]

🚨🔥⚠️ Action required: Switch to the new Greenkeeper now! 🚨🔥⚠️
This version of Greenkeper will be shutdown on May 31st.
With Integrations first-class bot support landed on GitHub and we’ve rewritten Greenkeeper to take full advantage of it. Simpler setup, fewer pull-requests, faster than ever.

---

Hello lovely humans,

sinon just published its new version 2.3.0.

State	Update :rocket:
Dependency	sinon
New version	2.3.0
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 :sparkles:

You rock!

:palm_tree:

---

GitHub Release

• Allow stubbing of accessors with and without sandbox (#1416)
• add throwsArg(index) to stubs (#1319)
• Fix: forEach() requires 'this' argument (#1356)
• Only reset history when calling resetHistory()

[coveralls]

Coverage increased (+0.02%) to 98.002% when pulling 6ff84d5015a82fff35c780d86c55f08fc927bba9 on greenkeeper-sinon-2.3.0 into 53f0beec9ad9a33a9f6b47649ca34a4d6bae95f8 on master.