v0.6.69

Zygote v0.6.69

Diff since v0.6.68

Important Changes

• gradient is now guaranteed to return a tuple with one gradient per argument, even if the gradients are nothing.
• Tuples of nothing returned from a now will now be consistently collapsed into a single nothing.

Merged pull requests:

• Handle Expr(:boundscheck) (#1462) (@ToucheSir)
• Swap PyCall to PythonCall (#1485) (@ToucheSir)
• Improve adjoint for product and zip (#1489) (@lxvm)
• Preserve 0d arrays in Zygote.accum (#1491) (@lxvm)
• Remove @adjoints for sort and filter (#1493) (@lkdvos)
• Un-collapse nothings in gradient (#1495) (@ToucheSir)

Closed issues:

• Adjoint of Adjoint with NamedTuples (#1438)
• Pullback on mean() gives illegal memory access code 700 (#1473)
• sort(x; rev=true) is not supported (#1492)
• Incorrect gradients for plan_rfft(x) * x (#1496)