Update grunt-contrib-uglify to the latest version 🚀

[greenkeeper[bot]]

Version 2.3.0 of grunt-contrib-uglify just got published.

Dependency	grunt-contrib-uglify
Current Version	2.2.1
Type	devDependency

The version 2.3.0 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 grunt-contrib-uglify. 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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Commits

The new version differs by 2 commits .

• f3086c1 v2.3.0.
• 7dc5e1d Log fixes. (#454) r=vladikoff

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).

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Your Greenkeeper Bot :palm_tree:

[greenkeeper[bot]]

Version 3.0.0 just got published.

Update to this version instead 🚀

Commits

The new version differs by 2 commits0.

• 0f45e4e v3.0.0.
• ccd7ad0 Upgrade to uglify-js 3.0.4. (#472)

false

See the full diff

[greenkeeper[bot]]

Version 3.0.1 just got published.

Update to this version instead 🚀

Commits

The new version differs by 3 commits.

• 2773e7e v3.0.1.
• 85a1ac3 fix typo
• 755360b Move require() up

See the full diff

[greenkeeper[bot]]

Version 3.1.0 just got published.

Update to this version instead 🚀

Commits

The new version differs by 1 commits.

• 5aefbce Update uglify-js to v3.1.0.

See the full diff