chore(deps): update dependency koa to v2

[renovate]

This Pull Request updates dependency koa from v1.4.0 to v2.3.0

Commits

koajs/koa

2.3.0

• aaac09a 2.3.0
• 327b65c Use node 7+ WHATWG parser for hostname, fixes #​1002 (#​1004)
• 0125878 added setters for header and headers, fixes #​991
• f6f1ab7 lint: commit --fix
• 4b41a8b update gitignore, added package-lock
• 41f8776 test: run ci on node 7,8 (#​992)
• beec26e docs: A middleware is always responsible for calling downstream (#​978)
• 0a7856c docs: Add note about overwriting charset in response.type (#​993)
• 7941fb5 grammar (#​994)
• 08eb1a2 docs: apply Date.now() to all docs (#​988)
• 302814e docs: Fix minor nitpick in documentation (#​987)
• bfce580 Update Readme.md (#​985)
• d394724 test: Use Jest (#​981)
• 13c7ca6 res.type=: remove no-op code (#​980)
• 9248660 test: fix spelling error (#​972)
• 32ebd1b Update Readme.md
• 3bbb74b docs: added note about arrays (#​964)
• 2da3dd4 eslint: remove unused eslint-plugin-babel (#​969)
• ee5af59 replace apply by spread syntax (#​971)
• 7f3d076 docs: fix documentation to match new http-errors API (#​957) (#​967)
• cd5d6a1 docs: reorganize "response.status=" section (#​966)
• 1b3e08e test: change a describe to it (#​963)
• 19fc419 Test: change a describe to it (#​959)
• cb12aa8 readme: update the order of accepted functions(#​958)
• 7bd82ac ⬆️ koa-compose@4 — remove any-promise
• 3721f6b test: remove redudant test case (#​956)
• efb05d2 eslint: remove deprecated babel/arrow-parens (#​953)
• 8703685 readme: fix typo (#​951)
• 18d753c use Buffer.from instead (#​946)

2.2.0

• 9a9949f 2.2.0
• 55d1d9a travis: cache node_modules (#​934)
• 4816cd7 :arrow-up: deps
• f841418 package: drop package.engines.node req to v6

2.1.0

• ebed04f 2.1.0
• e6539e1 Return middleware chain promise from callback() (#​848)
• 65c130d readme docs++ (#​932)
• e812339 docs: create v2 Migration document (#​931)
• e9d7aba res: use http.ServerResponse._header when accessors exist (#​930)
• 188c096 Add Troubleshooting documentation (#​921)
• e452b68 feat: set err.headerSent before app error event emit (#​919)
• 0c28d1f Fix async/await babel recommendation
• 909b829 Fix typo
• d740d9b Update the link to migration instructions (#​916)
• 73e9e13 chore: unify badge's style (#​914)
• 612a77b travis: test node@8 nightly
• 207aa4e readme: change generatorFunction to generator function (#​912)
• 0c2d881 update engines in package.json for 7.6.0 min node (#​911)
• 2fda9dd Added OpenCollective backers and sponsors (#​748)

2.0.1

• 6c6aa4d 2.0.1
• 4e5deae history++
• 6506108 package: remove publish tag
• d4b3223 docs++
• f191c0d package: oops re-add babel-eslint
• a7c4236 fix: add named arrow function for request and response handlers (#​805)
• cd02834 travis: only test node v7.6.0+
• 9671add test: remove babel tests as they are no longer needed in node v7.6
• df7b4ff docs: replace the reference to co
• 00156df remove unused app.name (#​899)
• 152b6d7 Fix response.status default value documentation (#​889)
• 8435268 Upgrade mocha (#​900)

2.0.0

• bd3d9e5 Merge pull request #​690 from PlasmaPower/patch-1

---

Warnings

Please make sure the following warnings are safe to ignore:

• koa-body-parsers: Dependency uses tag "`git+https://github.com/tunnckoCore/body-parsers.git`" as its version so that will never be changed by Renovate

---

This PR has been generated by Renovate Bot.

[renovate]

Renovate Ignore Notification

As this PR has been closed unmerged, Renovate will ignore this upgrade and you will not receive PRs for any future 2.x releases. However, if you upgrade to 2.x manually then Renovate will then reenable updates for minor and patch updates automatically.

If this PR was closed by mistake or you changed your mind, you can simply reopen or rename it to reactivate Renovate for this dependency version.