Make sure timeline works nicely together with states

Make sure timeline works nicely together with states.

We have to make sure a timeline can run backwards and on different strips depending on the state.
Idea:

The timeline has "sub timeline animation that can be triggered by different states:"

Timeline {
animaions: [
Timelineanimation

{ start: 540 end: 230 duration: 1000 enabled: false }

]

}