fix(rolling): return NaN when n < min_samples (#62) #315

Job	Run time
run_benchmarks	2m 50s
Run tests for 39-manylinux_x86_64	1m 8s
Run tests for 39-manylinux_aarch64	5m 27s
Run tests for 39-win_amd64	2m 9s
Run tests for 39-macosx_x86_64	1m 48s
Run tests for 39-macosx_arm64	40s
Run tests for 310-manylinux_x86_64	1m 11s
Run tests for 310-manylinux_aarch64	5m 41s
Run tests for 310-win_amd64	2m 12s
Run tests for 310-macosx_x86_64	2m 57s
Run tests for 310-macosx_arm64	36s
Run tests for 311-manylinux_x86_64	1m 15s
Run tests for 311-manylinux_aarch64	5m 37s
Run tests for 311-win_amd64	2m 2s
Run tests for 311-macosx_x86_64	1m 8s
Run tests for 311-macosx_arm64	56s
Run tests for 312-manylinux_x86_64	1m 23s
Run tests for 312-manylinux_aarch64	5m 17s
Run tests for 312-win_amd64	2m 8s
Run tests for 312-macosx_x86_64	1m 37s
Run tests for 312-macosx_arm64	1m 54s
Run tests for 313-manylinux_x86_64	1m 11s
Run tests for 313-manylinux_aarch64	5m 30s
Run tests for 313-win_amd64	2m 36s
Run tests for 313-macosx_x86_64	1m 18s
Run tests for 313-macosx_arm64	44s
	1h 1m 15s

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