undo 0.10.3

# undo

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An undo/redo library with dynamic dispatch and automatic command merging.
It uses the [Command Pattern](https://en.wikipedia.org/wiki/Command_pattern) 
where the user modifies a receiver by applying `Command`s on it.

The library has currently two data structures that can be used to modify the receiver:

* A simple `Stack` that pushes and pops commands to modify the receiver.
* A `Record` that can roll the state of the receiver forwards and backwards.

## License


Licensed under either of

 * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0)
 * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)

at your option.

### Contribution


Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any
additional terms or conditions.