v2.0.0

New features

This release restructures the crate around three types that mirror the relationship between Rust's slice, array, and Vec:

• CircularBuffer<T>: a new unsized "reference" type that holds the core logic (analogous to a slice [T]).
• FixedCircularBuffer<T, N>: the fixed-capacity, stack-allocatable buffer (analogous to an array [T; N]). This is the new name for what used to be CircularBuffer<N, T> in version 1 of the crate.
• HeapCircularBuffer<T>: a new heap-allocated buffer whose capacity can be set at runtime (analogous to Vec<T>).

Breaking changes

• Renamed the fixed-capacity buffer from CircularBuffer<N, T> to FixedCircularBuffer<T, N>. Note that the order of the generic parameters has also changed (to be more consistent with the order of parameters in Rust's array type). For example, CircularBuffer<16, u32> becomes FixedCircularBuffer<u32, 16>.
• The struct CircularBuffer is now the unsized type described above, no longer the owned fixed-size buffer.
• Removed the deprecated use_std cargo feature; use std instead.
• Removed the unstable cargo feature. All the code in this crate now uses fully stable Rust.
• Increased the minimum supported Rust version from 1.87 to 1.93.

Bug fixes

• Fixed a panic in drain() when called on a zero-capacity buffer.
• Fixed try_push_back() and try_push_front() on zero-capacity buffers. The
  methods used to discard the specified item; now they return it as an Err.
• Fixed a potential double-drop in the From<[T; M]> implementation for FixedCircularBuffer that could occur when an element's Drop implementation panicked.

Other changes

• Performance improvements for the Clone implementation.