Previewing an animation should always play from current frame #526
Description
The current behaviour of the "stop playback" button of the timeline doesn't make sense to me based on how other software works.
Let's say I'm making an animation. I draft it out, then I play it once to see if I like it. Let's say the whole scene is 10 seconds long. I realize the animation is way too slow, so I click "stop" to change it.
Clicking stop returns you to frame 0. But then when you play back again, it returns you to the frame that you stopped at before.
It is a little quirk but it stops me from doing work. In Audacity when you press "stop" it returns to the position 0. But then when you play back, you play from position zero.
TL;DR Previewing an animation should always start from the current frame. NOT the frame that preview was stopped at before.
This will likely be fixed with my PR and the whole new BaseCanvas and ViewLayer system.