Update xhr to the latest version 🚀

[greenkeeper]

Version 2.4.0 of xhr just got published.

Dependency	xhr
Current Version	2.3.3
Type	dependency

The version 2.4.0 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 xhr.
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 15 commits .

• a7b4344 2.4.0
• 1434957 remove accidental timeouts in tests
• 085fc6b assert abort tests are successful not only because xhr callback was run asynchronously
• 9f60a89 Merge pull request #153 from stuartsan/ensure-callback-not-called-on-abort
• f01681f fix mock server to be more readable
• 54988ff switching the controversial test back to try-catch as error is (a)synchronous in different browsers
• 7dc4abf Merge pull request #152 from naugtur/fix-151-more-nocontent-in-ff
• f2b1784 Use timeout endpoint to simulate more realistic response time
• d3ecab5 Test: trigger CI
• 5915c3a Add test for async abort
• 879ecb7 Ensure callback not called on abort
• 0b9ba05 generalize FF fix to 2xx
• 8913fac fix #151 - add exception for FF for 201 202 204 205 codes
• 82b507c Fix #148 - add timeouts to tests to prevent them from hanging when errors break assert.end
• b05c405 update personal information

See the full diff.

Not sure how things should work exactly?

There is a collection of frequently asked questions and of course you may always ask my humans.

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