Let's the developers of tuhi to consume more energy in their monitor
to light up more pixel when displaying single quotes whereas double
quotes.
It also makes the whole bit more uniform.
Fixes#32
fix ca82af78de ("tuhi: handle cold-plugged devices").
The point of deciding whether a device was in the pairing mode was actually
ignored when building the list of available devices.
If we're losing the bus name (i.e. we can't get it on startup) there really
isn't much we can do other than fail miserably. But in passing signals around
we can't do exceptions, so we have to move the mainloop to Tuhi so we can
quit() it on error.
Fixes#25
Benjamin Tissoires