- performance updates

package-lock.json

package.json

src/app/index.ts

src/lib/elements/basics/Arrow.ts

src/lib/elements/basics/Circle.ts

src/lib/elements/basics/Ellipse.ts

src/lib/elements/basics/Killbox.ts

src/lib/elements/basics/Rectangle.ts

src/lib/elements/buttons/IndexedRoundButtonMaskElement.ts

src/lib/elements/buttons/RoundButtonIndicatorElement.ts

src/lib/elements/connections/LineControlPoint.ts

src/lib/elements/connections/LineCorner.ts

src/lib/elements/controls/MultiSelectItemElement.ts

src/lib/elements/images/Image.ts