Several of the projects I work use git repos to manage SVG graphics files. While browsing commits, SourceTree only shows the raw XML diffs for SVG files, which isn't very useful (to me).

I can use QuickLook in the list of changed files to see the 'after' version, which is the next best thing. But it would be great if we could have full before/after preview of SVG files, like we do for other graphics files.