Add contains method to Shape and update docs

Introduces the contains(x, y, options) method to the Shape class for hit testing, with options for visibility and tolerance. Updates documentation for Shape and Two to reflect the new method and other API changes, including version bump to v0.8.22 and new getShapesAtPoint method in Two.

Author: jonobr1

src/shape.js

@@ -204,15 +204,25 @@ export class Shape extends Element {
    * @description Remove self from the scene / parent.
    */
   remove() {
-   if (!this.parent) {
-     return this;
-   }
+    if (!this.parent) {
+      return this;
+    }
 
-   this.parent.remove(this);
+    this.parent.remove(this);
 
-   return this;
+    return this;
   }
 
+  /**
+   * @name Two.Shape#contains
+   * @function
+   * @param {Number} x - x coordinate to hit test against
+   * @param {Number} y - y coordinate to hit test against
+   * @param {Object} [options] - Optional options object
+   * @param {Boolean} options.ignoreVisibility - If `true`, hit test against `shape.visible = false` shapes
+   * @param {Number} options.tolerance - Padding to hit test against in pixels
+   * @description Remove self from the scene / parent.
+   */
   contains(x, y, options) {
     const opts = options || {};
     const ignoreVisibility = opts.ignoreVisibility === true;
@@ -234,8 +244,7 @@ export class Shape extends Element {
       return false;
     }
 
-    const tolerance =
-      typeof opts.tolerance === 'number' ? opts.tolerance : 0;
+    const tolerance = typeof opts.tolerance === 'number' ? opts.tolerance : 0;
 
     this._update(true);