WIP: Merge Upstream back into fork#6

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tomscholz wants to merge 8 commits intofriendsofgo:masterfrom

Commits on Nov 9, 2019

Commits on Jan 3, 2020

feat: support std errors functions (#213)

Sherlock-Holo
authored and
aperezg
committed
remove unnecessary use of fmt.Sprintf (#217)
aperezg
authored

Commits on Jan 7, 2020

Support Go 1.13 error chains in `Cause` (#215)

jayschwa
authored and
aperezg
committed

Commits on Jan 14, 2020

Revert "Support Go 1.13 error chains in `Cause` (#215)" (#220)
aperezg
authored

Commits on Dec 14, 2020

AddingPowerSupport_CI/Testing (#234)
santosh653
authored