Update handlebars to version 4.0.7 🚀

[greenkeeperio-bot]

🚨🔥⚠️ Action required: Switch to the new Greenkeeper now! 🚨🔥⚠️
This version of Greenkeper will be shutdown on May 31st.
With Integrations first-class bot support landed on GitHub and we’ve rewritten Greenkeeper to take full advantage of it. Simpler setup, fewer pull-requests, faster than ever.

---

Hello lovely humans,

handlebars just published its new version 4.0.7.

State	Update 🚀
Dependency	handlebars
New version	4.0.7
Type	dependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of handlebars.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

---

The new version differs by 32 commits .

• 606fa55 v4.0.7
• 8e09f0e Update release-notes for 4.0.7
• c8f4b57 Fix context-stack when calling block-helpers on null values
• b617375 Parser: Change suffix to use ES6 default module export
• 63a8e0c Add more tests for partial-blocks and inline partials
• 5a164d0 Fix for #1252: Using @partial-block twice in a template not possible
• 01b0f65 Avoid duplicate "sourceMappingURL=" lines.
• 406f2ee require('sys') is deprecated, using 'util' instead
• a023cb4 Make "column"-property of Errors enumerable
• c7dc353 Testcase to verify that compile-errors have a column-property
• ad3037c v4.0.6 (again)
• 44ce5f4 Update release notes
• 3385de0 v4.0.6
• abc160a Use XML-like tags in test instead of bizarre dot delimiters
• 5ee91cb Add test reproducing #1185

There are 32 commits in total. See the full diff.