[Bio] RIP SHT15

[Dana S.]

Jake says the wires on our temperature/humidity sensor are corroded and it
can't be revived.

If folks want to pitch in to buy a replacement SHT15 that's great (they
are about $40), otherwise I'm happy to purchase something cheaper, the
trade off being it'd be less precise (SHT11 or DHT22 possibly)!

Next time we will need to find better way to protect our sensor from such
a high humidity environment, perhaps with hot glue.

- Dana