add Zygote and pre-allocated gradient buffer support

tpapp released this 10 Mar 20:35

· 104 commits to master since this release

81e3791

add ValueGradientBuffer for pre-allocated gradient storage (#34)
remove taped ReverseDiff-based AD (#36)
remove support for rejection-based unwindind of the stack (#39)
add support for Zygote-based AD (#40, experimental)

Assets 2