Features to be restored from pre Qt version

[illusion0001]

This ticket lists features that have yet to be carried over from pre Qt version. Pre-release 0.3.1

https://github.com/cirquit/trdrop/releases/tag/v03.1

• [ ] Save user settings to configuration file
• [x] Background Graph Shadow Overlay (Restored in #109)
• [ ] Tear Percentage in Framerate Graph
• [ ] Video Exporting

[cirquit]

All of those except the tear percentage in the framerate graph are on the roadmap for the v2.

Is this really the best way we can visualize tears? Because I feel this is really not easily understandable and visually cluttering.