SteamKit 1.6.5

• Added inventory service unified protobufs.
• Added the ability to specify the client's prefered Cell ID in LogOnDetails.CellID. (pr #148)
• KeyValue objects can now be serialized (both text and binary) to streams with SaveToStream.
• Fixed an issue with CDNClient session initialization involving sessionid values.
• Added setter for KeyValue's indexer operator.
• Added ELeaderboardDisplayType and various leaderboard retrieval functions to SteamUserStats. (pr #153)
• Implemented machine id support for logon for when the Steam servers inevitably require it. (pr #152)
• Fixed case where logging on with a different account could lead to an anonymous logon instead. (bug #160)
• SteamFriends.SetPersonaName now supports JobIDs and has a new associated callback: PersonaChangeCallback (Binary level breaking change)
• Updated game-related GC messages and protobufs.