I have just merged support for Sublime Text 3 into the main (master) branch. So, this is no longer in development: you will be getting it automatically via Package Control (update manually if necessary), or you can get it from GitHub.
As I explained in a previous post, the same code will work on Sublime Text 2 and Sublime Text 3. Hence, there will be feature parity on both versions of our beloved editor.
I have done my best to test extensively on various combinations of ST versions and platforms, but let me know if you see something strange.
Also, in case something is seriously broken, I have created an “st2” branch on GitHub hosting the code right before today’s merge. Consider this an emergency fallback only; the new code on the master branch should work fine.