1.7.0

This release adds a few things:

• When running in service mode with the --repeat=<seconds> option, this tool will now avoid sending requests to Gandi if your IP address has not changed since the last check. This means you can use a more aggressive update rate without overloading Gandi's servers, although I'll still ask that you keep the rate reasonable to avoid overloading the IP source servers! This behavior can be overridden by adding always_update = true to the top portion of your configuration file.
• Added SeeIP as an additional IP source.
• As a small optimization, some code generics that might have significantly increased built binary size were removed. This may or may not have any significant effect, but it did help clean up the codebase overall.