feat: add optional 64-bit sample precision #1120

Job	Run time
Tests (windows-latest, stable)	4m 41s
Tests (macos-latest, beta)	3m 28s
Tests (macos-latest, stable)	3m 30s
Tests (ubuntu-latest, nightly)	2m 50s
Tests (macos-latest, nightly)	2m 54s
Tests (windows-latest, beta)	6m 19s
Tests (windows-latest, nightly)	4m 53s
Tests (ubuntu-latest, beta)	2m 42s
Tests (ubuntu-latest, stable)	2m 39s
	33m 56s

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