reassembly: fix check overlap for case 6 

Fix Fatal->Fatalf in reassembly example. 

Merge pull request #649 from Lightspeed-Systems/dnsencodeblankq Proper size calculation for encoded question name

Add minimum go version requirement to documentation. This fixes #479

add icmpv6 echo serialize function 

fix nfds error in select statement From man page for select "nfds should be set to the highest-numbered file descriptor in any of the three sets, plus 1". This was causing one of our apps to never capture packets as the fd returned by pcap_get_selectable_fd was 8 and then never checked.

Release 20170808 

Guard a second instance of pcap_compile. 

Merge pull request #119 from randstr/ip6-review Add LayerGoString() to packet.go

Add Bill Green to AUTHORS.