Threads are not daemon
Using the Pymkr plugin for Atom I am able to launch scripts and stop them in realtime.
I just found a limitation in the _thread module. All the spawned threads are non-daemonic an that's the only choice; so, if you start a thread that never ends, it won't stop even if the script is killed.
Reproduce using this simple script:
Short of doing a reset, I don't see any way to avoid this scenario currently. I'm not at the point of being able to update my device remotely yet, but warning lights are already flashing in my brain over this becoming an issue.