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# Changelog
All notable changes to this project will be documented in this file.
The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
## Unreleased
- Add `remove_if` to `priority_channel::{Receiver, PriorityChannel}`.
- impl `Stream` for `channel::{Receiver, Channel}`.
- Fix channels to wake senders on `clear()`.
For `Channel`, `PriorityChannel`, `PubSub`, `zerocopy_channel::Channel`.
- Allow `zerocopy_channel::Channel` to auto-implement `Sync`/`Send`.
- Add `must_use` to `MutexGuard`.
- Add a `RwLock`.
- Add `lock_mut` to `blocking_mutex::Mutex`.
- Don't select a critical-section implementation when `std` feature is enabled.
- Improve waker documentation.
- Improve `Signal` and `Watch` documentation.
- Update to defmt 1.0. This remains compatible with latest defmt 0.3.
## 0.6.2 - 2025-01-15
- Add dynamic dispatch variant of `Pipe`.
## 0.6.1 - 2024-11-22
- Add `LazyLock` sync primitive.
- Add `Watch` sync primitive.
- Add `clear`, `len`, `is_empty` and `is_full` functions to `zerocopy_channel`.
- Add `capacity`, `free_capacity`, `clear`, `len`, `is_empty` and `is_full` functions to `channel::{Sender, Receiver}`.
- Add `capacity`, `free_capacity`, `clear`, `len`, `is_empty` and `is_full` functions to `priority_channel::{Sender, Receiver}`.
- Add `GenericAtomicWaker` utility.
## 0.6.0 - 2024-05-29
- Add `capacity`, `free_capacity`, `clear`, `len`, `is_empty` and `is_full` functions to `Channel`.
- Add `capacity`, `free_capacity`, `clear`, `len`, `is_empty` and `is_full` functions to `PriorityChannel`.
- Add `capacity`, `free_capacity`, `clear`, `len`, `is_empty` and `is_full` functions to `PubSubChannel`.
- Made `PubSubBehavior` sealed
- If you called `.publish_immediate(...)` on the queue directly before, then now call `.immediate_publisher().publish_immediate(...)`
- Add `OnceLock` sync primitive.
- Add constructor for `DynamicChannel`
- Add ready_to_receive functions to `Channel` and `Receiver`.
## 0.5.0 - 2023-12-04
- Add a `PriorityChannel`.
- Remove `nightly` and `unstable-traits` features in preparation for 1.75.
- Upgrade `heapless` to 0.8.
- Upgrade `static-cell` to 2.0.
## 0.4.0 - 2023-10-31
- Re-add `impl_trait_projections`
- switch to `embedded-io 0.6`
## 0.3.0 - 2023-09-14
- switch to `embedded-io 0.5`
- add api for polling channels with context
- standardise fn names on channels
- add zero-copy channel
## 0.2.0 - 2023-04-13
- pubsub: Fix messages not getting popped when the last subscriber that needed them gets dropped.
- pubsub: Move instead of clone messages when the last subscriber pops them.
- pubsub: Pop messages which count is 0 after unsubscribe.
- Update `embedded-io` from `0.3` to `0.4` (uses `async fn` in traits).
- impl `Default` for `WakerRegistration`
- impl `Default` for `Signal`
- Remove unnecessary uses of `atomic-polyfill`
- Add `#[must_use]` to all futures.
## 0.1.0 - 2022-08-26
- First release
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