proceeding to version 1.01

fixed two very suble bugs:
- sporadic packet-corruption where the enc28j60 send-control-byte would override the first byte resulting in a packet 1 byte shorter. (The following retransmittet package was correct, so one wouln't notice without sniffing)
- memory-leak when stop was called after remote connection-close with no outstanding data to read.

managed to save 510 bytes of flash without compromising functionality :-)