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

## The devDependency [steal](https://github.com/stealjs/steal) was updated from `2.2.1` to `2.2.2`.

🚨 [View failing branch](https://github.com/bitovi/syn/compare/master...bitovi:greenkeeper%2Fsteal-2.2.2).

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

steal 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 could not complete due to an error ([Details](https://travis-ci.org/bitovi/syn/builds/566484846?utm_source=github_status&utm_medium=notification)).

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Commits

The new version differs by 5 commits.

• a1fd13d 2.2.2


• 5f4b0d0 Merge pull request #1501 from stealjs/system-register


• ef3b887 Skip tests checking stack trace erros in Safari / Iphone


• e91f6c7 Update Saucelabs platform parameters


• 607f49f Use a stricter RegExp to detect System.register modules

See the full diff

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