Update sinon to the latest version 🚀

[greenkeeper[bot]]

Version 4.0.0 of sinon just got published.

Dependency	sinon
Current Version	3.3.0
Type	devDependency

The version 4.0.0 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.

---

Commits

The new version differs by 11 commits.

• 95908f4 Add release notes for 4.0.0
• 460907b Update docs/changelog.md and set new release id in docs/_config.yml
• 6f599a6 Add release documentation for v4.0.0
• fba2e29 4.0.0
• c838e22 Update History.md and AUTHORS for new release
• 3837635 Merge pull request #1569 from fatso83/1566-update-deps
• 3d3a044 Explicitly update fake xhr lib 'nise'
• 5ec0ae0 Merge pull request #1564 from fatso83/amended-1563
• cf32e6d Update deps lock file
• 37ff38b Removes dependency to "build"
• 34fc2ba Remove support for stubbing undefined props (#1557)

See the full diff

Not sure how things should work exactly?

There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html) and of course you may always [ask my humans](https://github.com/greenkeeperio/greenkeeper/issues/new).

---

Your Greenkeeper Bot :palm_tree:

[greenkeeper[bot]]

• The devDependency sinon was updated from 3.3.0 to 8.1.0.

Update to this version instead 🚀

[greenkeeper[bot]]

• The devDependency sinon was updated from 3.3.0 to 9.0.0.

Update to this version instead 🚀

[greenkeeper[bot]]

• The devDependency sinon was updated from 3.3.0 to 9.0.1.

Update to this version instead 🚀

[greenkeeper[bot]]

• The devDependency sinon was updated from 3.3.0 to 9.0.2.

Update to this version instead 🚀