Pass through ChainRules zeros in @adjoint too #25
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After playing a grand game of whack-a-mole adding
back(::AbstractZero)
overloads in FluxML/Zygote.jl#1389, it'd probably be better to enable this by default for all@adjoint
s. This change is effectively non-functional without that PR since@adjoint
pullbacks should never see CR zero types, so I think it should be pretty safe until we trigger a PR like FluxML/Zygote.jl#1389.PR Checklist