Log Message:
Update to 1.7.0

Upstream changes:
1.7.0 2018-12-30
  [ ENHANCEMENTS ]
    - Setup aliases at compile time (Nicolas R, GH#11)
    - add recommended Net::Pcap{,Utils} from README (Zak B. Elep, GH#12)

  [ NEW FEATURES ]
    - adds back basic support for IPv6. (Dan Book, GH#10)

  [ STATISTICS ]
    - code churn: 16 files changed, 1177 insertions(+), 48 deletions(-)