Update validator to version 4.5.1 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

validator just published its new version 4.5.1, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of validator – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

---

The new version differs by 4 commits .

• eae8756 4.5.1
• c576993 Merge pull request #475 from aristidesfl/islength
• 07978ef MakeisLength() / isByteLength()also accept an options object{min, max}``
• de56274 Update the license

See the full diff.

---

This pull request was created by greenkeeper.io. It keeps your software, up to date, all the time.

_{Tired of seeing this sponsor message? Upgrade to the supporter plan! You'll also get your pull requests faster :zap:}