Blender Git Loki

Claude: Fix asyncio handling!

Turns out using worker thread to run asyncio loop is not working with pillar, this code is totally
not blender-independent and hence cannot safely work in another thread.

So instead using same technique as in AmberAIO - 'stepping' of asyncio loop, instead of blindly
run_forever() and hoping loop will stop some day...

Note that we may rather call e.g. loop.run_later(1e-5, loop.stop), to actually give a bit more
time to the loop... Time will say what's best option here.