- locals and external IP addresses can be discovered
- if netifaces is available, it is used
- same thing for NAT Port plugin
- cache is no more managed per profile but globally, a signal or observer will be used in the future to detect connection changes
- a dedicated plugin now manage IP discovery, for now it uses external website, but it should implement XEP-0279 soon
- a permission is requested to user for calling an external website. Once the permission is granted (it's global), it is not asked anymore.
- the ip is discovered on demand, and cache is kept for the session.
- memory.params.getParamA has a new parameter use_default, which allow to get None when a parameter is not set, instead of the default value.
This allow to detected when we need to do the first permission request. memory.getParamA don't have this parameter.
