Add a DownloadManifest method to use with CDNs
Update CS:GO, Dota 2 Test, Dota 2, Steamclient (beta), Steam Streaming Client protobufs
Regenerate protos
Update EResult
Merge pull request #49 from xPaw/maythefourth

Add a DownloadManifest method to use with CDNs
Update behavior of SteamID.Set function to match Steam.
Merge branch 'master' of https://github.com/SteamRE/SteamKit