Support for SIMD operations for RGG1555

Description

Up to 3x the performance for RGG1555 with SIMD operations. The current implementation is hardcoded for 16 bytes at a time (128 bits). Still requires some testing and validation for AVX2 and AVX512.

Fixes #45 (closed)

.gitlab-ci.yml

@@ -72,7 +72,7 @@ test-rust:
   stage: test
   parallel:
     matrix:
-      - RUST_VERSION: ["1.70.0", "1.71.0", "stable", "nightly"]
+      - RUST_VERSION: ["1.74.0", "1.75.0", "stable", "nightly"]
   script:
     - rustup toolchain install $RUST_VERSION
     - rustup override set $RUST_VERSION