Add option for auxillary randomness #165

Job	Run time
Test - 1.63.0 toolchain (minimal)	1m 48s
Test - 1.63.0 toolchain (minimal)	1m 48s
Prepare	5s
Prepare	5s
Test - 1.63.0 toolchain (recent)	2m 29s
Test - 1.63.0 toolchain (recent)	1m 44s
Docs - stable toolchain (recent)	34s
Docs - stable toolchain (recent)	34s
Test 32-bit version	1m 5s
Test 32-bit version	1m 5s
Format - nightly toolchain	12s
Format - nightly toolchain	12s
Test - stable toolchain (minimal)	24s
Test - stable toolchain (minimal)	24s
WASM - stable toolchain	3m 6s
WASM - stable toolchain	3m 6s
Test - stable toolchain (recent)	1m 34s
Test - stable toolchain (recent)	1m 34s
Lint - nightly toolchain (recent)	32s
Lint - nightly toolchain (recent)	32s
Bench - nightly toolchain (recent)	56s
Bench - nightly toolchain (recent)	56s
Docs - nightly toolchain (recent)	1m 21s
Docs - nightly toolchain (recent)	1m 21s
Test - nightly toolchain (minimal)	39s
Test - nightly toolchain (minimal)	39s
Test - nightly toolchain (recent)	57s
Test - nightly toolchain (recent)	57s
	30m 39s

Provide feedback