Translations:What's new in UnrealIRCd 6/3/en

If you are upgrading from UnrealIRCd 5.x to UnrealIRCd 6.x, then read Upgrading from 5.x. That article explains how to upgrade and also the effects if you run a 'mixed network", that is: with both UnrealIRCd 5 and UnrealIRCd 6 servers on the same network.