Most of the changes are to deal with the new throttle on inspects. Currently if you inspect to often then the server will not return additional information. This means that when you mouseover a player you may see a GS that is several days old. To combat this you will now have to target a player for an updated GS. You will still see their GS on mouseover if you have them in your database. You will also see a message on how old that GS is.
This isn't as bad of a change as it sounds, in reality most players just say "Whats your GearScore?" instead of looking anyways.
Because of this change communications in the addon will drastically drop, I plan to open up a few restrictions in the future so that player's databases do not become out of date all the time.
Additional changes are new options and bug fixes.