Profiler - split up bracketing of frame with BeginFrame/EndFrame, correctly triggered a loading session at the beginning of the very first frame
Profiler - added Enabled check on BeginFrame()
AMF - minor optimization to read directly from byte array
Add overloads for GetIndexAsObject/GetIndexAsUntyped

This saves from unncessary boxing
Missed overloads for long, fixes string/int ambiguities
Merge remote-tracking branch 'origin' into binjson