Update expect to version 1.20.1 🚀

[greenkeeperio-bot]

Hello 👋

🚀🚀🚀

expect just published its new version 1.20.1, 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 expect – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging 🌴

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The new version differs by 71 commits .

• 5983068 Version 1.20.1
• b1ed956 Update CHANGES
• 7364501 Objects w different proto are not equal
• aa5b420 Version 1.20.0
• c821162 Update CHANGES
• 2d93c43 Fix ESLint failures
• 1e5c292 Update CHANGES
• 5478f43 Handle non-array keys in toIncludeKeys (#94)
• e352755 Restore toEqual behaving like == regression
• cf9c6d5 Only include diff when objects are not equal
• e9396a9 Objects with different prototypes are equal
• 922ebf2 added expect-predicate extension to README (#95)
• 84a9d00 Version 1.19.0
• 3dd115c Update CHANGES
• f44d386 Update CHANGES

There are 71 commits in total. See the full diff.

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