* Bump qnapstats library to 0.2.3
* Expose the new timeout setting
* Show persistent notification if QNAP fails to set up
This sitaution will usually occur if the server configuration is wrong or the
timeout is set too low. In both cases `api.update()` will fail, which is a
problem because we cannot initialize many of the sensors without having this
data.
* Add new system_temp condition to QNAP sensor
Paulus Schoutsen
Fabian Affolter
Colin O'Dell