Release prior to IPv6 fixes for starts-with-zero error

Merge pull request k8snetworkplumbingwg#36 from crandles/inclusive-ra…

…nge-end

range_end should be treated as inclusive when iterating for ip assignments

Merge pull request k8snetworkplumbingwg#32 from dougbtv/travis-opensh…

…ift-build

Updates travis to build Dockerfile.openshift

Merge pull request k8snetworkplumbingwg#5 from dougbtv/ipv6

IPv6 Initial support