I've now posted documentation of the addin file formant (.goomod) currently used by GooTool, in the hope of getting feedback on the structure from others. Hopefully community agreement can be reached on the format so it's not limited to GooTool. For example I'd like to see wogedit be able to create levels as goomod files for direct installation by GooTool users. Please check it out and head over to the forum to leave comments.

Update: I've added a "compile" directory which contains files for GooTool to encrypt automatically. Originally I was intending that new files would be encrypted in advance and put into the override directory, but this would require different versions of an addin for Mac and PC.