Improve: 2x Faster L2 on Arm NEON #211
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Accelerated `l2sq_i8_neon` with `vabdq_s8` and unsigned dot-product instructions from 17 GB/s to 33 GB/s.
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Accelerated
l2sq_i8_neonwithvabdq_s8and unsigned dot-product instructions from 17 GB/s to 33 GB/s.