created tool class which keeps track of cursors, incorporates changeTool; made changelog data its own file

js/tools/_rectangle.js

@@ -0,0 +1,14 @@
+
+new Tool('rectangle', {
+	cursor: 'crosshair',
+	brushPreview: true,
+});
+
+
+
+new Tool('resizerectangle', {
+	cursor: 'default',
+});
+
+
+/*global Tool, tool*/