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)

Cargo.toml

@@ -18,6 +18,7 @@ crate-type = ["cdylib", "rlib"]
 default = []
 wasm = ["wasm-bindgen", "js-sys"]
 python = ["pyo3"]
+benchmark = ["criterion"]
 simd = []
 debug = []
 pedantic = []
@@ -28,9 +29,7 @@ gen-mock = []
 wasm-bindgen = { version = "0.2", optional = true }
 js-sys = { version = "0.3", optional = true }
 pyo3 = { version = "0.20", optional = true }
-
-[dev-dependencies]
-criterion = "0.5"
+criterion = { version = "0.5", optional = true }
 
 [build-dependencies]
 chrono = "0.4"