Don't switch to the old state, switch to the new state.
New pins on the Teensy2

These pins are more convenient for soldering on
the Teensy2.
Set lower threshold on 1/10th instead of 1/20th
Don't always add the min_humidity_diff, instead
only add it at the beginning and let the
envelope take over.
mixed up max/min
Added munin plugin to read out values of the shofanduino2