10k online samples

If all goes well, my ESP8266-based online thermometer will reach ten thousand uninterrupted samples in the next hours. That's a bit more than 6 days. Actually it survived a xDSL outage, and the counter was reset (memo: keep two counters). Nothing to be really proud of, but it somehow proves that the code produced by the ESP-Arduino IDE is stable enough for a long-term project.