Which editor created by Allan Odgaard does the standlaone code editor, Ace, is aimed at improving upon?
Ace (editor): Ace (from Ajax.org Cloud9 Editor) is a standalone code editor written in JavaScript. Ace (editor):  The goal is to create a web-based code editor that matches and extends the features, usability, and performance of existing native editors such as TextMate, Vim, or Eclipse. TextMate: TextMate is a general-purpose GUI text editor for Mac OS X created by Allan Odgaard.
TextMate