GitLab

This would cause error when checking out with git clone --recursive,
such as when golang dep clones the repo.
Signed-off-by: Rob Adams <readams@readams.net>

Signed-off-by: Rob Adams <readams@readams.net>

* Search by CIDR rather than just by IP.
Signed-off-by: Rob Adams <readams@readams.net>

travis: add 1.9.x to go versions

Fix index-out-of-bound bug when inserting network that shares direct branch point with single-IP (leaf) network, closes #3

Support storing custom user data with inserted entries to Ranger by introducing the RangerEntry interface, closes #2

Implement uint32 array reprentation for ip address of both IPv4 and IPv6 to enable fast bit level calculation

Add benchmarks for ip utility functions and separate benchmark for hit/miss cases for Ranger implementations