Hey everyone, sorry for leaving you in the lurch. This project is dead.
Soon after my last update here, I got my first job programming games. Afterwards I'd tried a couple times to come back to Sneaky, but it ended up being a long while before I could muster up the resolve to work on my own projects in my (volatile) free time. By then Sneaky seemed ancient history.
I hope it's adequate consolation that I am still releasing the source, so you can freely pick its bones or just read the code to aid understanding of my technical explanations here. Be warned that I did some things in bogus ways that now seem obvious. Nonetheless, the code should be easy to read. Feel free to PM me if you need help understanding anything therein.
Here's the project, already upgraded to Unity 4.6.0f3 (which introduced no obvious new bugs), released under the MIT license.
Thanks so much for your support to this point. Glad to hear my technical posts have been helpful.