Remove animation doesn't remove it from scene

[TimPietrusky]

Issue description

When removing an animation that is part of a scene, the animation is not removed from the animation. Instead when removing the animation the following errors are thrown:

timeline-animation

    // Cannot read property 'keyframes' of undefined

    if (changedProperties.has('animation')) {
      this.timeline = this.computeTimeline(this.animation.keyframes);
    }

animation-list-item

// Cannot read property 'name' of undefined

    return html`
      <div>
        ${animation.name}
      </div>
    `;

Steps to reproduce

• Add animation A
• Add the animation A to scene A
• Add scene A to the timeline
• Remove animation A
• Find animation A still assigned to scene A

Versions

1. Browser: Chrome 69
2. luminave: 3.0.0

[TimPietrusky]

:tada: This issue has been resolved in version 3.6.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket:

[TimPietrusky]

:tada: This issue has been resolved in version 3.6.1 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: