Translations:Upgrading from 3.2.x/16/en

Finally, with the new link block a lot of it is made optional. You may leave out the whole outgoing part if you only accept the link as incoming, for example for a services link block. Similarly, you may leave out incoming if you have an outgoing block. Within the outgoing block only hostname and port are mandatory (though you probably want to enable ssl via options there as well, and possibly autoconnect). Outside incoming and/or outgoing only password and class are mandatory, all the rest is optional. If you don't specify any of the hub or leaf options we assume hub *; (in other words: link may introduce any other servers).