Update mocha to the latest version 🚀

Version 3.4.0 of mocha just got published.

Dependency	mocha
Current Version	3.3.0
Type	devDependency

The version 3.4.0 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 mocha. 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.

Release Notes

v3.4.0

Mocha is now moving to a quicker release schedule: when non-breaking changes are merged, a release should happen that week.

This week's highlights:

allowUncaught added to commandline as --allow-uncaught (and bugfixed)
warning-related Node flags

🎉 Enhancements

#2793, #2697: add --allowUncaught to Node.js (@lrowe)
#2733: Add --no-warnings and --trace-warnings flags (@sonicdoe)

🐛 Fixes

#2793, #2697: fix broken allowUncaught (@lrowe)

🔩 Other

#2778: Add license report and scan status (@xizhao)
#2794: no special case for macOS running Karma locally (@boneskull)
#2795: reverts use of semistandard directly ([#2648]) (@boneskull)

Commits

The new version differs by 9 commits0.

7554b31 Add Changelog for v3.4.0
9f7f7ed Add --trace-warnings flag
92561c8 Add --no-warnings flag
ceee976 lint test/integration/fixtures/simple-reporter.js
dcfc094 Revert "use semistandard directly"
93392dd no special case for macOS running Karma locally
4d1d91d --allow-uncaught cli option
fb1e083 fix allowUncaught in browser
4ed3fc5 Add license report and scan status

false

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