Implicit property type change from string to object from 1.5.0 to 1.6.0

Description:

• A-Frame Version: 1.5.0 to 1.6.0
• Platform / Device: all
• Reproducible Code Snippet or URL:

Before 1.6 I could do

AFRAME.registerComponent('componentname', {
  events: {
    released: function (evt) {
      console.log('This event was received!', evt);
      console.log( this.el.getAttribute('componentname') ); 
    }
  }
});

but now in 1.6 I must do

AFRAME.registerComponent('componentname', {
  schema: { type: 'string' },
  events: {
    released: function (evt) {
      console.log('This event was received!', evt);
      console.log( this.el.getAttribute('componentname') ); 
    }
  }
});

In 1.5 the output of e.g componentname="test" would be "test" but now it is {} unless the string type is forced via the schema.

Example https://glitch.com/edit/#!/aframe-16-implicit-component-type with output in the console.

This is not particularly a problem but it lead to unexpected behaviors for me. I briefly checked the change log and couldn't find it as a change. Is this expected? Documented?

Reproduce the 1.5.0 and 1.6.0 behavior using the provided Glitch example, focusing on registerComponent, schema handling, and getAttribute. The issue names no source file or test, so first locate the component registration and property parsing entry points. Done means determining whether the change is intentional and, if not, restoring the expected value or documenting the required schema behavior.