SteamKit 1.7.0

• Added awaitable API for job-based messages. APIs which returned a JobID now return an AsyncJob<>, which can be used to asynchronously await for results. (pr #170)
• Added SteamApps.PICSGetAccessTokens overload with singular parameters. (pr #190)
• Added SteamFriends.RequestMessageHistory and SteamFriends.RequestOfflineMessages (pr #193)
• Added the ability to connect to Developer instances of Steam (EUniverse.Dev). If anyone at Valve is using this internally, hi!
• Added the ability to set a LoginID in SteamUser.LogOnDetails so that multiple instances can connect from the same host concurrenctly. (pr #217)
• Added SteamClient.DebugNetworkListener API to intercept and log raw messages. (pr #204)
• Added the ability to dump messages in NetHook2 format for debugging purposes. (pr #204)
• Upgraded the encryption protocol used to communicate with the Steam servers.
• Implemented protection against man-in-the-middle attacks. (pr #214)
• Server List will now maintain ordering from Steam, increasing the chances of a successful and geographically local connection. (pr #218)
• After calling SteamUser.LogOff or SteamGameServer.LogOff, SteamClient.DisconnectedCallback.UserInitiated will be true. (pr #205)
• Fixed a crash when parsing a Steam ID of the format '[i:1:234]'.
• Fixed a crash when logging on in an environment where the hard disk has no serial ID, such as Hyper-V.
• Fixed a bug when parsing a KeyValue file that contains a / followed by a newline. (pr #187)
• Updated Steam enums and protobufs.
• Updated game-related GC messages and protobufs.

BREAKING CHANGES

• SteamKit2 now requires .NET 4.5 or equivalent (Mono 3.0), or higher.
• Removed obsoleted ICallbackMsg extension methods IsType<> and Handle<>. (pr #221)
• Game Coordinator base messages are now generated per-game, instead of relying on Dota 2. GC messages should use the base messages for their game, which is separated by namespace. (pr #180)
• Cell IDs are now consistently uints within SteamDirectory.