Update uglify-js to version 3.0.10 🚀

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Hello lovely humans,

uglify-js just published its new version 3.0.10.

State	Update 🚀
Dependency	uglify-js
New version	3.0.10
Type	dependency

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 uglify-js.
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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GitHub Release

 

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The new version differs by 326 commits .

• d3c4a8e v3.0.10
• 7e164ab add "es5" to package.json keywords (#1980)
• 22aedef document minify() option toplevel (#1979)
• 58fae7d enhance if_return to handle return void... (#1977)
• 5bf8d7e document 3.x minify() does not throw errors (#1975)
• 1df9d06 document minify warnings and add an error example (#1973)
• 3408fc9 v3.0.9
• eae2675 introduce unsafe_regexp (#1970)
• 43add94 v3.0.8
• efcf167 make expect_stdout node version specific (#1963)
• 6ed9091 fix docs for side_effects flag to reflect current behavior (#1966)
• 569c21e improve RegExp handling (#1959)
• 87c3a2c remove space_colon (#1960)
• baef8bf update output options in readme (#1958)
• 0813c53 remove Travis CI badge

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

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This change is