Open event for modal not sent?

Hello. I am trying to handle data passed to modal but it looks like `open` event does not received in my handler

```
mounted () {
      this.$on('open', () => {
         // Not executed
      })
      this.$on('opened', () => {
        // Not executed
      })

      this.$on('close', () => {
        // Executed!
      })
},

``` 

```
...
"vue-bulma-modal": "1.0.1",
...
```