Add pause, unpause, loop, speed ACEs

2.1.0

Add pause, unpause, loop, speed ACEs

Add play animation action, AnimationNames expression

AnimationNames returns a JSON string array of Animation Names, which can be used by C3 JSON object.

Fix unskinned mesh animation.

1.7.1

fix (gltf): fix unskinned animations 1.7.1

gltf load and animation experiment

1.7.0

1.6.1 Fix Z Order, allow for ordered rotation for set rotation