Add more ChainRules derivatives#348

Merged

stevengj merged 5 commits intoJuliaMath:masterfrom

devmotion:dw/more_chainrules

Sep 24, 2021

Commits on Sep 22, 2021

Commits on Sep 23, 2021

Commits on Sep 24, 2021

Convert irrational manually with `oftype`
devmotion
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