Controls how bones after the first bone are positioned along the path.
Spacing mode in the Spine User Guide.
@:value(cast 1)@:enum@:implinlineread onlyFixed:SpacingMode = 1
@:value(cast 0)@:enum@:implinlineread onlyLength:SpacingMode = 0
@:value(cast 2)@:enum@:implinlineread onlyPercent:SpacingMode = 2