Bind characters with repetition

**Describe the bug**
I am trying to bind a key combination like "k > k".  

**Example code**
```js
keyboardjs.bind("k > k", () => {
    console.log("k was pressed and then again k was pressed")
});

```

**Expected behavior**
Event should have been triggered

**Enviroment**
 - OS: Windows
 - Browser Edge
 - Version 2.7.0
