After not being able to set the default wrap setting on GitHub.com and finding no answer to this SO question, and seeing problems with a workaround solution for tab indent size here, I'm wondering if there is a better editor for GitHub when online using 'Edit file'?
I know most dedicated devs use GH as a repo and for versioning, but a lot of users start small projects with it and it would be nice to have common code editing features built into the online editor. Even better would be a quick preview for changes to the GitHub Pages static sites, similar to StackOverflow's text preview.