0.2.5

• Add Arc::{new_zeroed,new_zeroed_slice} at Rust 1.36+. (align to the std Arc change in Rust 1.92) (f8affb6, ae5aba7)

• Implement Default for Pin<Arc<T>: Default>. (align to the std Arc change in Rust 1.91) (2d8d33c)

• Implement From<&mut {[T],str}> for Arc<{[T],str}> at Rust 1.36+. (align to the std Arc change in Rust 1.84) (99640d6, ae5aba7)

• Implement {AsFd, AsRawFd} for Arc<T> on Trusty. (1b09ffb)

• Support slice-related methods that previously required Rust 1.44+ at Rust 1.36+. (ae5aba7)

• Support AsRawFd for Arc<T> implementation on Unix in all Rust versions. Previously, it was only for Rust 1.63+. (1b09ffb)

• Fix build error when building for HermitOS with std feature in Rust 1.63-1.68. (1b09ffb)

• Documentation improvements.

• Enable release immutability.