- Add `async-trait` crate to `future` feature.
- Duplicate the modules under `sync_base` to `future` and modified them to remove the
  thread pool (including to switch to an async-aware locks).
- Add iterator API to `cht::SegmentedHashMap`.
- Major API changes on `future::Cache`. See the `doc/migration-guide.md` for
  more details.
- Change the delivery mode of the eviction listener of `future::Cache` from `Queued`
  to `Immediate`.
- Update the unit and integration tests.
  - But unit tests in `future::base_cache` are disabled yet.

Ensure that `future::Cache` will remove key-level locks after eviction notifications
are delivered.

- Remove `async-io` crate.
- Refactor some internal methods.

- Bump the version to v0.12.0.
- Move `flush` method from `future::ConcurrentCacheExt` trait to `future::Cache`
  struct.

Clean up dependencies and feature flags.

Clean up dependencies and feature flags.

The same refactoring as `future::base_cache::Inner::admit` is applied to
`sync_base::base_cache::Inner::admit`.

- Add `beta.1` to the version.
- Reenable a unit test.

Update the integration tests for async runtimes.

- Make `future::Cache`'s internal `schedule_write_op` method to yield to the other
  async tasks when the write op channel is full.
- Strengthen the orderings of a `compare_exchange` operation in Housekeeper to ensure
  that other thread can see the updated value immediately.

Update the migration guide.

- Rename `eviction_listener` method of `future::CacheBuilder` to
  `async_eviction_listener`. This method takes a closure that returns a
  `ListenerFuture`.
- Add `eviction_listener` method. This method takes a closure that returns nothing.
- Update the documentation.

Replace `entry.last_modified().is_none()` with `entry.is_dirty()`.

Update the change log, readme, and migration guide.

- Rename `flush` method of `future::Cache` to `run_pending_tasks`.
- Enable unit tests in `future::base_cache`.

Update the doc.

Try to make `run_pending_tasks` to be cancelling safe.

Make `run_pending_tasks` to be cancelling safe.

`futures-util` v0.3.17 is the first version that supports `poll_immediate`.

- Remove unsafe `Send` and incorrect `Sync` impls from internal `cht::iter::Iter`.
- Update some code comments.

Tweak the doc.

Tweak a unit test.

Tweak the migration guide.

clippy 0.1.73 (680cdf8168a 2023-08-21)