Scrollable timeline

You can now scroll the timeline horizontally. This makes it easier to animate longer projects and focus on one part of the animation.

Other improvements & fixes

• It is now possible to edit the artboard duration graphically in the timeline
• We now display the artboard duration next to the artboard name in the canvas
• We now use the project name to name the exported file (.mp4 or .gif)
• Fixed a bug in the timeline when there were no animations
• Fixed a bug that would make the application crash on some text effects
• Fixed the layer header styling