Refactor Element Functions (#233)

* Remove `generatedraw` from element object

- Create a function that renders a single element
- Refactor rendering selected elements

* Replace getElementAbsoluteXY with getElementAbsoluteCoords

src/element/index.ts

@@ -1,9 +1,6 @@
 export { newElement } from "./newElement";
 export {
-  getElementAbsoluteX1,
-  getElementAbsoluteX2,
-  getElementAbsoluteY1,
-  getElementAbsoluteY2,
+  getElementAbsoluteCoords,
   getDiamondPoints,
   getArrowPoints
 } from "./bounds";
@@ -11,5 +8,4 @@ export {
 export { handlerRectangles } from "./handlerRectangles";
 export { hitTest } from "./collision";
 export { resizeTest } from "./resizeTest";
-export { generateDraw } from "./generateDraw";
 export { isTextElement } from "./typeChecks";