Update gulp-tslint to version 8.0.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

gulp-tslint just published its new version 8.0.0.

State	Update 🚀
Dependency	gulp-tslint
New version	8.0.0
Type	devDependency

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 gulp-tslint.
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!

🌴

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The new version differs by 21 commits .

• 19726ad Release 8.0.0.
• 5a16f03 Merge pull request #113 from markm11/master
• 0fd5c23 Renamed all failureCount's to errorCount
• c0146ba Updated index.ts and removed file.tslint.failureCount
• 2436a69 Updated packages
• e10cd8a Merge branch 'master' of https://github.com/markm11/gulp-tslint
• ced7883 Breaking changes in tslint version 5. Renamed failureCount to errorCount
• f07bc7a Breaking changes in tslint version 5. Renamed failureCount to errorCount
• 9868b00 Merge pull request #112 from JoshuaKGoldberg/patch-1
• eb9a6a9 Changed first code sample to be js-highlighted
• 704b0c0 Merge pull request #109 from tmos/patch-1
• 0203788 Add the stylish formatter in the Readme
• 59db005 Release 7.1.0.
• 7185e11 Merge pull request #107 from okaufmann/master
• d76dfe1 Issue #106: skip directories while reporting errors

There are 21 commits in total. See the full diff.

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