Update deep-extend to the latest version 🚀

[greenkeeper]

Version 0.6.0 of deep-extend was just published.

Dependency	deep-extend
Current Version	0.5.1
Type	dependency

The version 0.6.0 is not covered by your current version range.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

It might be worth looking into these changes and trying to get this project onto the latest version of deep-extend.

If you have a solid test suite and good coverage, a passing build is a strong indicator that you can take advantage of these changes directly by merging the proposed change into your project. If the build fails or you don’t have such unconditional trust in your tests, this branch is a great starting point for you to work on the update.

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Commits

The new version differs by 9 commits.

• f3f2b4f more versions of node.js to test by travis-ci
• 3d85253 package.json: updated "engines"
• 8b8aef9 dropped support of old node.js versions
• 120fd97 increased "devDependencies" (mocha) up enough to fix vulnerability
• 235821a decreasing versions of "devDependencies" to fix tests for older node versions
• a1eb0eb README: removed "download" stats badge
• 7bebe75 CHANGELOG: info for 0.5.2 version
• 16b328f 0.5.2
• 0402225 updated "devDependencies" to fix vulnerability alerts

See the full diff

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Your Greenkeeper bot 🌴

[realityking]

@desmondmorris Could you merge this and tag a new minor? 🙏 Thank you!