Easy LaTeX Editor with SVN or GIT connection and auto-update
TeXstudio supports SVN. (See screenshot below.)
Here are some useful links to deal with SVN and git:
- Configuring SVN support
- TeXStudio and TortoiseSVN
- Using TeXstudio with git
Not necessary a LaTeX editor per se, but if you want to have a bunch of files for which you want to automatically have them commited to git at certain defined timepoints, you should take a look at flashbake, which does exactly that. So you could write in your editor and externalize the autosave to another piece of software running in the background.
The writer Cory Doctorow uses flashbake to record his writing, including some "meta" data about the process. The project is available on GitHub.