Update a0.2

Changelog:

Additions:

1. Seek bar: click anywhere on the red bar to skip to that section of the video
2. Frame-by-frame scrolling: use the left and right arrow keys to move forward and backward by one frame.
3. Playback speed: adjust how fast the video plays, works in decimals so 0.5 for half speed, 2 for double etc.

Fixes:

• Fixed a bug where pausing the playback and then skipping the video would cause the next video to play while the timer is paused.