Reduce transformation cage rotate tolerance (#548)

Author: 0HyperCube

editor/src/consts.rs

@@ -32,7 +32,7 @@ pub const SELECTION_DRAG_ANGLE: f64 = 90.;
 
 // Transformation cage
 pub const BOUNDS_SELECT_THRESHOLD: f64 = 10.;
-pub const BOUNDS_ROTATE_THRESHOLD: f64 = 40.;
+pub const BOUNDS_ROTATE_THRESHOLD: f64 = 20.;
 
 // Path tool
 pub const VECTOR_MANIPULATOR_ANCHOR_MARKER_SIZE: f64 = 5.;