v0.6.38

Zygote v0.6.38

Diff since v0.6.37

Closed issues:

• non-differentiable error for code that needn't be differentiable (#175)
• Performance of gradient depends on size of implicitly used array (#1180)
• Initializing buffer twice in loop results in a corrupted array (#1191)
• Mismatch gradient output with compared to the docs. (#1193)
• Params iteration is type unstable (#1202)
• AD error due to interaction of missing gradient of besselk and struct with vector (#1204)

Merged pull requests:

• Ton of doctests added (#1194) (@arcAman07)
• Fixing spelling error in the docs (#1197) (@arcAman07)
• Fix type stability of Params.order (#1203) (@ancapdev)
• Handle ChainRulesCore.NotImplemented (#1205) (@devmotion)