inari 0.9.7-pre4

cfg_if::cfg_if! {
    if #[cfg(docsrs)] {
        mod unimplemented;
        pub(crate) use unimplemented::*;
    } else if #[cfg(target_arch = "aarch64")] {
        mod aarch64;
        pub(crate) use aarch64::*;
    } else if #[cfg(target_arch = "x86_64")] {
        mod x86_64;
        pub(crate) use x86_64::*;
    } else {
        unreachable!();
    }
}