Get rid of offset tracking in core, and let individual shapes track it themselves

src/create-composite-object.js

@@ -49,8 +49,8 @@ module.exports = function createCompositeObject(options) {
 				let position = getPosition(object);
 
 				object.render(context, {
-					x: object.x - this.renderOffsetX,
-					y: object.y - this.renderOffsetY
+					x: object.x - this.offsetX,
+					y: object.y - this.offsetY
 				});
 			});
 		},
@@ -72,11 +72,12 @@ module.exports = function createCompositeObject(options) {
 			let x2 = max(objectMetrics.map(object => object.x2));
 			let y2 = max(objectMetrics.map(object => object.y2));
 
+			this.offsetX = x1;
+			this.offsetY = y1;
+
 			return {
 				width: x2 - x1,
-				height: y2 - y1,
-				offsetX: x1,
-				offsetY: y1
+				height: y2 - y1
 			}
 		}
 	}, initialPropertySet._));

src/create-object.js

@@ -74,8 +74,6 @@ module.exports = function createObject(options) {
 
 			this.renderWidth = newSize.width * this.scaleX;
 			this.renderHeight = newSize.height * this.scaleY;
-			this.renderOffsetX = defaultValue(newSize.offsetX, 0) * this.scaleX;
-			this.renderOffsetY = defaultValue(newSize.offsetY, 0) * this.scaleY;
 			this.renderUnderdrawX = defaultValue(newSize.underdrawX, 0) * this.scaleX;
 			this.renderUnderdrawY = defaultValue(newSize.underdrawY, 0) * this.scaleY;
 			this.renderOverdrawX = defaultValue(newSize.overdrawX, 0) * this.scaleX;