Auto merge of #5999 - ember-cli:greenkeeper-markdown-it-6.1.0, r=Turbo87
Auto merge of #5999 - ember-cli:greenkeeper-markdown-it-6.1.0, r=Turbo87

Update markdown-it to version 6.1.0 🚀

Hello lovely humans,

[markdown-it](https://www.npmjs.com/package/markdown-it) just published its new version 6.1.0.

<table>
  <tr>
    <th align=left>
      State
    </th>
    <td>
      Update :rocket:
    </td>
  </tr>
  <tr>
    <th align=left>
      Dependency
    </td>
    <td>
      markdown-it
    </td>
  </tr>
  <tr>
    <th align=left>
      New version
    </td>
    <td>
      6.1.0
    </td>
  </tr>
  <tr>
    <th align=left>
      Type
    </td>
    <td>
      dependency
    </td>
  </tr>
</table>

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 markdown-it.
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](https://greenkeeper.io/faq.html) and while I’m just a bot, there is a group of people who are happy to teach me new things. [Let them know](https://github.com/greenkeeperio/greenkeeper/issues/new).

Good luck with your project :sparkles:

You rock!

:palm_tree:

---
The new version differs by 7 commits .

- [`4eb0e21`](https://github.com/markdown-it/markdown-it/commit/4eb0e21ef419cca9baa1b99716122e87a025c63e) <code>6.1.0 released</code>
- [`265fb85`](https://github.com/markdown-it/markdown-it/commit/265fb853833ad780284fa285eea25cab43aa9d28) <code>Browser files rebuild</code>
- [`bee5547`](https://github.com/markdown-it/markdown-it/commit/bee5547ba4c70b9d3e65651a76069c324a996817) <code>Deps bump</code>
- [`b7c868b`](https://github.com/markdown-it/markdown-it/commit/b7c868b64b710c8e706191d89a6dd80fcbbc9166) <code>Renderer: token stream should stay immutable, close #260</code>
- [`c09b563`](https://github.com/markdown-it/markdown-it/commit/c09b56331794de4f6776e46bfa099e12ac12fde6) <code>6.0.5 released</code>
- [`7aa9ad9`](https://github.com/markdown-it/markdown-it/commit/7aa9ad90769c9f40ac1fb09ea6e7a75d3a7b65e4) <code>Browser files rebuild</code>
- [`6dbe532`](https://github.com/markdown-it/markdown-it/commit/6dbe532460ca519cd05c07a862555c90dfbe906a) <code>Replace standalone CR with LF when normalizing newlines</code>

See the [full diff](https://github.com/markdown-it/markdown-it/compare/e95a8b765ef72b53c122ec6da1b1c95055deac6b...4eb0e21ef419cca9baa1b99716122e87a025c63e).

---
This pull request was created by [greenkeeper.io](https://greenkeeper.io/).

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trentmwillis/ember-cli,nathanhammond/ember-cli,scalus/ember-cli,josemarluedke/ember-cli,xtian/ember-cli,mike-north/ember-cli,kategengler/ember-cli,raycohen/ember-cli,trentmwillis/ember-cli,elwayman02/ember-cli,fpauser/ember-cli,kellyselden/ember-cli,BrianSipple/ember-cli,pzuraq/ember-cli,buschtoens/ember-cli,HeroicEric/ember-cli,Turbo87/ember-cli,twokul/ember-cli,cibernox/ember-cli,jgwhite/ember-cli,thoov/ember-cli,sivakumar-kailasam/ember-cli,trabus/ember-cli,cibernox/ember-cli,gfvcastro/ember-cli,ef4/ember-cli,sivakumar-kailasam/ember-cli,Turbo87/ember-cli,williamsbdev/ember-cli,sivakumar-kailasam/ember-cli,rtablada/ember-cli,scalus/ember-cli,nathanhammond/ember-cli,jrjohnson/ember-cli,jasonmit/ember-cli,akatov/ember-cli,HeroicEric/ember-cli,josemarluedke/ember-cli,sivakumar-kailasam/ember-cli,seawatts/ember-cli,nathanhammond/ember-cli,seawatts/ember-cli,calderas/ember-cli,williamsbdev/ember-cli,xtian/ember-cli,balinterdi/ember-cli,kriswill/ember-cli,pzuraq/ember-cli,williamsbdev/ember-cli,rtablada/ember-cli,thoov/ember-cli,ef4/ember-cli,givanse/ember-cli,kanongil/ember-cli,kanongil/ember-cli,ember-cli/ember-cli,akatov/ember-cli,jasonmit/ember-cli,jgwhite/ember-cli,scalus/ember-cli,twokul/ember-cli,BrianSipple/ember-cli,mike-north/ember-cli,pzuraq/ember-cli,balinterdi/ember-cli,kriswill/ember-cli,raycohen/ember-cli,romulomachado/ember-cli,calderas/ember-cli,trabus/ember-cli,asakusuma/ember-cli,trentmwillis/ember-cli,jgwhite/ember-cli,trabus/ember-cli,asakusuma/ember-cli,williamsbdev/ember-cli,romulomachado/ember-cli,kellyselden/ember-cli,givanse/ember-cli,patocallaghan/ember-cli,josemarluedke/ember-cli,rtablada/ember-cli,johanneswuerbach/ember-cli,kellyselden/ember-cli,cibernox/ember-cli,xtian/ember-cli,patocallaghan/ember-cli,seawatts/ember-cli,akatov/ember-cli,akatov/ember-cli,kanongil/ember-cli,ember-cli/ember-cli,fpauser/ember-cli,xtian/ember-cli,johanneswuerbach/ember-cli,scalus/ember-cli,jgwhite/ember-cli,ember-cli/ember-cli,HeroicEric/ember-cli,BrianSipple/ember-cli,romulomachado/ember-cli,trabus/ember-cli,ef4/ember-cli,buschtoens/ember-cli,jasonmit/ember-cli,calderas/ember-cli,BrianSipple/ember-cli,johanneswuerbach/ember-cli,givanse/ember-cli,romulomachado/ember-cli,pzuraq/ember-cli,elwayman02/ember-cli,patocallaghan/ember-cli,fpauser/ember-cli,thoov/ember-cli,kanongil/ember-cli,mike-north/ember-cli,trentmwillis/ember-cli,patocallaghan/ember-cli,josemarluedke/ember-cli,kellyselden/ember-cli,gfvcastro/ember-cli,kriswill/ember-cli,jasonmit/ember-cli,seawatts/ember-cli,nathanhammond/ember-cli,fpauser/ember-cli,Turbo87/ember-cli,cibernox/ember-cli,jrjohnson/ember-cli,givanse/ember-cli,kriswill/ember-cli,twokul/ember-cli,twokul/ember-cli,HeroicEric/ember-cli,calderas/ember-cli,rtablada/ember-cli,thoov/ember-cli,mike-north/ember-cli,kategengler/ember-cli,gfvcastro/ember-cli,gfvcastro/ember-cli,ef4/ember-cli,Turbo87/ember-cli,johanneswuerbach/ember-cli