Bump koa from 2.11.0 to 2.13.0

[dependabot-preview]

Bumps koa from 2.11.0 to 2.13.0.

Changelog

Sourced from koa's changelog.

2.13.0 / 2020-06-21

features

• [bbcde76] - feat: support esm (#1474) (ZYSzys <>)

others

• [20e58cf] - test: imporve coverage to 100% (dead-horse <>)
• [4a40d63] - build: use prepare instead of prepublish (dead-horse <>)
• [226ba8c] - build: use prepublish instead of prepack (dead-horse <>)

2.12.1 / 2020-06-13

fixes

• [e2030c7] - fix: Improve checks for Error in onerror handlers (#1468) (Julien Wajsberg <>)

others

• [5208c5e] - chore: Use single console.error() statement in error handler (#1471) (Mike Vosseller <>)

2.12.0 / 2020-05-18

features

• [0d2f421] - feat: error handler treat err.statusCode as the same as err.status (#1460) (Vijay Krishnavanshi <>)
• [8d52105] - feat: allow bodyless responses for non empty status codes (#1447) (ejose19 <<8742215+ejose19@users.noreply.github.com>>)

others

• [faeaff5] - fox: remove error-inject and fix error handling (#1409) (Konstantin Vyatkin <>)
• [f7c732f] - docs: fixed incorrect onerror example (#1459) (Paul Annekov <>)
• [143d8f7] - Always use strict equality. (#1225) (Yazan Medanat <>)
• [6b6b0dd] - docs(api): add app.use chainability note (#1449) (Zac Anger <>)
• [8ddab48] - docs: Document response status with empty body (#1445) (Marc-Aurèle DARCHE <<152407+madarche@users.noreply.github.com>>)
• [7deedb2] - docs: Updating context.md with the latest cookies opts (#1433) (Brad Ito <>)
• [3e97a10] - docs(links): remove Google+ link (#1439) (laffachan <<45162759+laffachan@users.noreply.github.com>>)
• [eda2760] - build: Drop unused Travis sudo: false directive (#1416) (Olle Jonsson <>)

Commits

• af3a1fd Release 2.13.0
• 20e58cf test: imporve coverage to 100%
• 4a40d63 build: use prepare instead of prepublish
• 226ba8c build: use prepublish instead of prepack
• bbcde76 feat: support esm (#1474)
• b7d8c97 Release 2.12.1
• e2030c7 fix: Improve checks for Error in onerror handlers (#1468)
• 5208c5e chore: Use single console.error() statement in error handler (#1471)
• 9ee6584 Release 2.12.0
• 0d2f421 feat: error handler treat err.statusCode as the same as err.status (#1460)
• Additional commits viewable in compare view

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Superseded by #75.