Multi-protocol and NFN release

Dear All,

today we released CCN-lite v0.2.0 on GitHub.

Over the past year it has evolved considerably: For example it has
become a multi-protocol forwarder (ccnb, NDN, a compact IOT-TLV
variant and (unofficial) CCNx1.0), although not all features of a
suite might be supported.

But most important for us, this release also contains our Named
Function Networking implementation (NFN).

Enjoy!

Best, the CCN-lite team in Basel