Update remark to the latest version 🚀

[greenkeeper[bot]]

Version 8.0.0 of remark just got published.

Dependency	remark
Current Version	7.0.1
Type	dependency

The version 8.0.0 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 remark. 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.

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Not sure how things should work exactly?

There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html) and of course you may always [ask my humans](https://github.com/greenkeeperio/greenkeeper/issues/new).

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Your Greenkeeper Bot :palm_tree:

[codecov-io]

Codecov Report

Merging #205 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #205   +/-   ##
=======================================
  Coverage   59.83%   59.83%           
=======================================
  Files          16       16           
  Lines         244      244           
  Branches       52       52           
=======================================
  Hits          146      146           
  Misses         98       98

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Continue to review full report at Codecov.

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