Update gulp-tslint to version 8.1.0 🚀

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Hello lovely humans,

gulp-tslint just published its new version 8.1.0.

State	Update 🚀
Dependency	gulp-tslint
New version	8.1.0
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 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 69 commits .

• 6042908 Bump minor version. Add changelog for 8.1.0. Minor style changes.
• 58de113 Merge pull request #122 from sjbarag/allow-warnings
• 63cc8a0 Add documentation for allowWarnings report option
• 772d7d5 Add allowWarnings option to print warnings without failing
• 9d2f301 Merge pull request #119 from mxl/migrate-to-types
• aa97e12 Merge pull request #118 from mxl/patch-1
• 064adfd Migrate to TypeScript Types Bot definitions. Fix map-stream version.
• 1c8717c Document fix option default value.
• 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

There are 69 commits in total. See the full diff.