Release 6.0.0

Feature: Updated to Steamworks SDK 1.32
Feature: Unity 5 64-bit Editor support
Feature: Expose the current active APICall Handle from CallResults

Changed: Added [Flags] to EHTMLKeyModifiers
Changed: Catch exceptions that happen within Callbacks/CallResults
Changed: HTML_ComboNeedsPaint_t & HTML_NeedsPaint_t.pBGRA from string -> IntPtr
Changed: Added [In, Out] attribute to all array arguments when P/Invoking (May fix some cases of corrupted marshaling)

Fixed: MatchMakingKeyValuePair_t when using more than 1 filter.
Fixed: ISteamHTMLSurface missing some of it's parameters
Fixed: Callbacks crashing under Mono 3.2.7 and higher

The Standalone package is for non-Unity .NET applications. Get the .unitypackage if you are using Unity.