Update yargs to version 4.8.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

yargs just published its new version 4.8.0.

State	Update 🚀
Dependency	yargs
New version	4.8.0
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 yargs.
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 27 commits .

• eb1e185 chore: cut release
• 9d4a5a8 docs: switch to the ridiculous appveyor URL you get when you switch project orgs
• 76eb66e chore(release): 4.8.0
• e058c87 fix: ignore invalid package.json during read-pkg-up (#546)
• 8d6ad6e feat: builder is now optional for a command module (#545)
• 2609b2e fix: lazy-load package.json and cache. get rid of pkg-conf dependency. (#544)
• 588a8c1 Merge pull request #543 from yargs/greenkeeper-nyc-7.0.0
• 4d6153a chore(package): update nyc to version 7.0.0
• ed86b78 fix: we now respect the order of _ when applying commands (#537)
• e6cf29e docs: added documentation about commands not inheriting configurations (#526)
• 20d4b8a feat(command): derive missing command string from module filename (#527)
• 365fb9a fix: drop unused camelcase dependency fixes #516 (#525)
• 5904d5c Merge pull request #524 from yargs/patch-1
• 0f8faa7 fix: keep both zh and zh_CN until yargs@5.x
• b299dff feat: add .commandDir(dir) to API to apply all command modules from a relative directory (#494)

There are 27 commits in total. See the full diff.

[coveralls]

Coverage remained the same at 43.103% when pulling c8e525f on greenkeeper-yargs-4.8.0 into 447a382 on master.