Notify parent listener to changes of array objects

[luffs]

The index of the element of the array is not included, but I don't really need it so ¯\_(ツ)_/¯

[GianlucaGuarini]

@luffs thanks for your pull request but at moment I don't want to add this feature to icaro keeping it simpler. You can keep using your branch for your project.

Side notes:

• you have changed the generated code and not the source code in the src folder so you might update the src/index.js file if you want to keep your fork clear
• extending all the icaro instances adding the .parent property by default might be dangerous because you are modifying the internal structure of your objects and this can lead you to unexpected bugs

[luffs]

Fair enough, and thanks for taking time to answer and giving feedback :)