[FEATURE]: Onion Skin Sets

[lowes2]

Feature request hasn't been filed before.

• I have verified that the feature request I'm about to file hasn't been filed before. If it has, please go the existing issue and give it a thumbs up.

Describe the feature you want to see

By pressing a button, the previous set will be highlighted in a faint, translucent outline, to help make transitioning from set to seat easier when writing.

Ideas or mockups (optional)

No response