pty-shell 0.1.2

Spawn a shell and control it through pty

### 0.1.2

* Change the argument type of the input/output handler (from `Vec<u8>` to `&[u8]`)
* Offer the `PtyCallback` as a builder
* Add `shutdown` handler
* Add `resize` handler

### 0.1.1

* Add `PtyCallback` struct for callback-style usage

### 0.1.0

* First implementation