Update 4

Apologies to anyone who was in the middle, your checkmarks will likely be scrambled. In this update I removed 2 levels, reordered and renamed some levels, and revised several levels. Also some minor aesthetic and bug related updates.

Removed: 
Labyrinth, Insurance (but renamed what was previously "wrangling" to "Insurance").

Revised, either because an unintended solution was found or because I felt the level could be better:
Sheep Shearing Charade, Tight Corridor, Inseparable, Long Day, Sheep Sausage, Five a Cross (previously known as "Four in Hand"), and Sisyphus is Still Herding.