Update koa to version 1.2.5 🚀

[greenkeeperio-bot]

Hello lovely humans,

koa just published its new version 1.2.5.

State	Update 🚀
Dependency	koa
New version	1.2.5
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 koa.
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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The new version differs by 124 commits .

• 8b2dbf6 Release 1.2.5
• d28d959 Fix malformed content-type header causing exception on charset get (#897)
• 948d3ef Use node.js 6 and 7 too (#869)
• 799d3b4 this.is() returns null when no body is passed (#850)
• c62aa90 doc: Change usage of reserved word static in guide (#829)
• a293cc2 Release 1.2.4
• 27caff3 fix: should get subdomains from hostname instead (#809)
• 4c665cc Release 1.2.3
• b1a14f1 fix: subdomains should be [] if the host is an ip (#807)
• 1aa85ce Release 1.2.2
• 2600a20 fix: add named function for request and response handlers (#804)
• 53ed176 Fixes typo in error handling section of API readme (#786)
• 0f3ec40 Update Readme.md
• c2c626f typo
• 4e969b5 Release 1.2.1

There are 124 commits in total. See the full diff.

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