Implement support for IPV6

This new release implement support for IPV6. It is possible to disable the ipv4 or ipv6 update by using the --noipv4 and --noipv6 flags.

Support for setting custom ipv4 provider using `--ip-getter is dropped . Instead the ipfy.org API is used to fetch current public ipv4 and ipv6.

Fixes records update that updated too much records

When multiple record of different type shared the same name they would all get updated with the same record definition. As the definition was the same it ended up deleting any other non type A records.

Fix multiple record update.

This release fixed the BadRequest error when updating multiple records at once.

LiveDNS Gandi api update

This update migrates gandip to the new LiveDNS gandi api.

Please note that cli invocation must be updated to use the fully qualified domain name instead of the zone name.

GandIP version 1

This first stable release allow you to update multiple records from a DNS zone.