Add SIMD (avx, avx2) optimizations for LJPEG92 encoder #117
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ljpeg-encoder/encode_3000x2000 time: [97.943 ms 98.145 ms 98.369 ms] change: [-28.387% -28.228% -28.076%] (p = 0.00 < 0.10) This adds little bit of unsafe code.
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This adds little bit of unsafe code.