improved signature for deleted text runs, added demo 54 and added documentation for change tracking

src/file/track-revision/track-revision-components/deleted-text.ts

@@ -0,0 +1,15 @@
+import { SpaceType } from "file/space-type";
+import { XmlAttributeComponent, XmlComponent } from "file/xml-components";
+
+class TextAttributes extends XmlAttributeComponent<{ readonly space: SpaceType }> {
+    protected readonly xmlKeys = { space: "xml:space" };
+}
+
+export class DeletedText extends XmlComponent {
+    constructor(text: string) {
+        super("w:delText");
+        this.root.push(new TextAttributes({ space: SpaceType.PRESERVE }));
+
+        this.root.push(text);
+    }
+}