[STABLE ABI] Port lfilter to stable ABI #4060
Draft
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This PR ports lfilter to the stable ABI. The c++ generic interface (for non-cpu and non-cuda devices) is temporarily removed, an will be added back in python for now. The code still uses parallel_for for now. Although the code currently works off of the
stable_accesor
andpseudo_main
branch (incorporating those commits), it can be rebased to depend only onmain
if necessary.Currently, this PR only includes the CPU kernel. It will eventually contain both cpu and cuda kernels.