ButtonAPI.on returns void instead of this

[Zyie]

Hey, the ButtonAPI.on function returns void instead of ButtonAPI which is different from all the others.

this.box = pane.addInput(this, 'test').on('change', () =>
{
   // do something
});

this.button = pane.addButton();
this.button.on('click', () =>
{
    // do something
});

[cocopon]

Thank you for reporting the issue! Fixed in the latest version 1.3.2.