This project follows semantic versioning.

# 0.6.0

* [removed] `PushCopy` and co.
* [changed] `CanPush` was added to alleviate duplicate `PushedOut` definitions
* [changed] Various polishing stuffs

# 0.5.1

* [changed] Various crate polishing

# 0.5.0

* [removed] `contain-rs` feature
* [changed] Inter-trait dependencies have changed; please re-read docs
* [fixed] `collections` is now `alloc`
* [fixed] Now runs on stable

# 0.4.0

* [added] `Append`, `Insert`, `InsertRef` traits
* [changed] `Nothing` has been replaced with `Void`

# 0.3.1

* [added] `PushSorted`

# 0.3.0

* [changed] Certain impls are now feature-gated.

# 0.2.1

* [added] More impls.
* [fixed] Clarified time/space complexity.

# 0.2.0

* [changed] Replaced `Push<&T>` with `PushRef<T>` to make trait bounds easier.
* [added] More impls.

# 0.1.0

* Initial release.