pub fn donchian_batch_with_kernel(
high: &[f64],
low: &[f64],
sweep: &DonchianBatchRange,
k: Kernel,
) -> Result<DonchianBatchOutput, DonchianError>pub fn donchian_batch_with_kernel(
high: &[f64],
low: &[f64],
sweep: &DonchianBatchRange,
k: Kernel,
) -> Result<DonchianBatchOutput, DonchianError>