Update github to version 6.1.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

github just published its new version 6.1.0.

State	Update 🚀
Dependency	github
New version	6.1.0
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 github.
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 139 commits .

• eef99a4 bump to 6.1.0
• e867506 Storing GitHub request ID and retry-after header (#464)
• 8f71887 remove some intermediate apidoc versions
• 7b4cb37 some example fixes
• 1e10931 reference endpoint updates
• bfd5929 bump to 6.0.4
• bcd235d don't trim endpoint params
• 11a7348 add getReferences example
• 2d55b53 update ref description for get archive link
• 9be0e4a update ref description for create reference
• 25f7034 small edit to apidoc generation
• fbe285a update apidoc
• bfb4cd5 bump to 6.0.3
• d3dfcf7 include allowed values in apidoc
• 2022e15 maintain indent size of 4 throughout lib code

There are 139 commits in total. See the full diff.

---

This pull request was created by greenkeeper.io.

_{Tired of seeing this sponsor message? ⚡ greenkeeper upgrade}