An in-range update of karma is breaking the build 🚨

Nobody has claimed this yet.

## The devDependency [karma](https://github.com/karma-runner/karma) was updated from `3.1.1` to `3.1.2`.

🚨 [View failing branch](https://github.com/maple3142/mapleutil/compare/master...maple3142:greenkeeper%2Fkarma-3.1.2).

This version is **covered** by your **current version range** and after updating it in your project **the build failed**.

karma is a devDependency of this project. It **might not break your production code or affect downstream projects**, but probably breaks your build or test tools, which may **prevent deploying or publishing**.

Status Details

- ❌ **continuous-integration/travis-ci/push:** The Travis CI build failed ([Details](https://travis-ci.org/maple3142/mapleutil/builds/462225077?utm_source=github_status&utm_medium=notification)).

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Release Notes for v3.1.2

Bug Fixes

• browser: report errors to console during singleRun=false (#3209) (30ff73b), closes #3131


• changelog: remove release which does not exist (#3214) (4e87902)


• dep: Bump useragent to fix HeadlessChrome version (#3201) (240209f), closes #2762


• deps: upgrade sinon-chai 2.x -> 3.x (#3207) (dc5f5de)


• file-list: do not preprocess up-to-date files (#3196) (5334d1a), closes #2829


• package: bump lodash version (#3203) (d38f344), closes #3177


• server: use flatted for json.stringify (#3220) (fb05fb1), closes #3215

Features

• docs: callout the key debug strategies. (#3219) (2682bff)

Commits

The new version differs by 11 commits.

• 7d4d347 chore: release v3.1.2


• 5077c18 chore: update contributors


• fb05fb1 fix(server): use flatted for json.stringify (#3220)


• 2682bff feat(docs): callout the key debug strategies. (#3219)


• 4e87902 fix(changelog): remove release which does not exist (#3214)


• 30ff73b fix(browser): report errors to console during singleRun=false (#3209)


• 5334d1a fix(file-list): do not preprocess up-to-date files (#3196)


• dc5f5de fix(deps): upgrade sinon-chai 2.x -> 3.x (#3207)


• d38f344 fix(package): bump lodash version (#3203)


• ffb41f9 refactor(browser): log state transitions in debug (#3202)


• 240209f fix(dep): Bump useragent to fix HeadlessChrome version (#3201)

See the full diff

FAQ and help

There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html). If those don’t help, you can always [ask the humans behind Greenkeeper](https://github.com/greenkeeperio/greenkeeper/issues/new).

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Your [Greenkeeper](https://greenkeeper.io) Bot :palm_tree:

Start by locating the project's karma devDependency and reproduce the failure from the Greenkeeper failing branch or Travis CI build 462225077. Compare the build behavior between karma 3.1.1 and 3.1.2, then verify that the project build and tests pass with the resolved dependency state.

Written by the indexing model from the issue text.