fix the DHTxx class for DHT21/DHT22 use, fixes #47
fix port pin assignments for the JeeNode Micro (!)
add support for hex reporting mode ("1x")

also no longer allows setting node id via A..Z uppercase
switch to 2-space indentation
add '>' command for sending a packet to any band, group, etc
change MemoryPlug API: arg order & defaults
avoid INPUT_PULLUP for ATtiny