Set DOCS_RS=1 when building nightly, to trigger bug in proc_macro2 build that causes docs.rs build to fail.  Example: https://docs.rs/crate/build-data/0.3.2/builds/2174829

Make a new release to rebuild docs.  Since safe_proc_macro2 1.0.95 is released, the docs.rs build should succeed.

Generate multiple ChaCha20 blocks at a time, to support neon/avx code that will generate multiple blocks at a time.

Add ChaCha20::buffers in preparation for neon/avx code that will generate multiple blocks at a time.

Incomplete ARM Neon SIMD support.  Alas, although function is not marked `unsafe`, it is marked with `#[target_feature(enable = "neon")]` which requires at least one ancestor caller to use `unsafe`. :(
https://doc.rust-lang.org/stable/core/arch/aarch64/fn.vaddq_u32.html
https://rust-lang.github.io/rfcs/2045-target-feature.html
https://rust-lang.github.io/rfcs/2396-target-feature-1.1.html
https://shnatsel.medium.com/the-state-of-simd-in-rust-in-2025-32c263e5f53d
Next step is to try auto-vectorization: https://matklad.github.io/2023/04/09/can-you-trust-a-compiler-to-optimize-your-code.html .

Try auto-vectorization: https://matklad.github.io/2023/04/09/can-you-trust-a-compiler-to-optimize-your-code.html .  Provides no change in throughput.

Implement `AsRef<Path>` on `&TempDir` not `TempDir`, to eliminate footgun.  #15 (comment 3032249306)

Implement `AsRef<Path>` on `&TempFile` not `TempFile`, to eliminate footgun.  #15 (comment 3032249306)