v0.4.22

Zygote v0.4.22

Diff since v0.4.21

Closed issues:

• Gradient through Distributions.jl's loglikelihood returns "nothing" (but Tracker succeeded) (#436)
• MethodError: no method matching +(::Nothing, ::Array{Float32,2}) (#454)
• Ref does not play nicely with Adjoint (#490)
• deprecate dropgrad (#536)
• Array Indexing Error (#597)
• Zygote doesn't work with CUDA.CuArray (#665)
• Gradient doubling (#687)
• Tag? (#690)
• Gradient doubling (part 2) (#691)
• Regression on Zygote v0.5 (#703)

Merged pull requests:

• move to CUDA.jl (#701) (@CarloLucibello)
• tag new release (#702) (@CarloLucibello)
• nograd div (#706) (@CarloLucibello)