[Snyk] Security upgrade koa from 1.7.0 to 2.0.0

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	461/1000 Why? Recently disclosed, Has a fix available, CVSS 3.5	Regular Expression Denial of Service (ReDoS) SNYK-JS-DEBUG-3227433	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: koa

The new version differs by 118 commits.

• 3595ef5 2.0.0
• bd3d9e5 Merge pull request #690 from PlasmaPower/patch-1
• efcdd3b Docs: v2 error handling is environment independent
• 2b094eb docs: update history and docs for v2
• daf688b Merge pull request #683 from fl0w/v2.x
• 0ac4ff0 Convert generator-mw with deprecation warning
• a1aec3d Merge pull request #686 from robinpokorny/lint-js-in-markdown
• 340dd4f Lint JavaScript in Markdown
• 39f058e fix cookies' secure detect
• bcada5b readme: update URLs based on HTTP redirects
• 9ba2f9c Merge pull request #681 from PlasmaPower/update-error-handling-doc
• 1d1698e Update error handling doc to use promises+async
• 882ea7e Merge pull request #678 from PlasmaPower/cherrypick-to-next
• 04a7122 lint: benchmarks/
• 2df468b Merge pull request #679 from PlasmaPower/remove-unused-http
• 5517158 travis: run lint
• 597638d Remove unused http variable
• a440425 Add support for headers in errors
• 3d15c24 JSDoc question/suggestion on optional parameters
• d768ed8 docs: note stream error handling and destruction. ref: #612
• 86a6f2b add CODE_OF_CONDUCT.md
• a808671 add app.silent, err.status, err.expose to doc, fixes #630
• 53a165f chore(license): update license year to 2016
• d74802d Standardizes instances of removeHeader to remove

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

---

Note: You are seeing this because you or someone else with access to this repository has authorized Snyk to open fix PRs.

For more information:
🧐 View latest project report

🛠 Adjust project settings

📚 Read more about Snyk's upgrade and patch logic

---

Learn how to fix vulnerabilities with free interactive lessons:

🦉 Regular Expression Denial of Service (ReDoS)