Allow indent to use other options than left and hanging

This is a breaking change. Existing code using indent will break when padding in the number for left.

ts/docx/paragraph/index.ts

@@ -134,8 +134,8 @@ export class Paragraph extends XmlComponent {
         return this;
     }
 
-    public indent(start: number, hanging?: number): Paragraph {
-        this.properties.push(new Indent(start, hanging));
+    public indent(attrs: object): Paragraph {
+        this.properties.push(new Indent(attrs));
         return this;
     }