Fixed a bug with union cases called "Tag".
Added support for HashBang's gzip compression.
Added obj.ReferenceEquals for null checks.
Switched to .NET 4.5. Fixed some string functions. Added UrlEncode/Decode support.
Fixed an encoding issue. Added minimal Nullable support.
A couple workarounds for HashBang.
More fixes for HashBang.
Attempt to fix twitter sample

* Still not working, but at least now is compiling