Support Katana response headers.
Check for null response heads before parsing.
Check InputStream on when seekable.
Add 404 NotFound to Owin response.
Check when Get/InputStream is seekable.
Intercept context task errors and output.
Handle JsonFx Task exceptions.
Add ViewPath + Discovery appSettings to transform.
Better handle missing refs of ExportedTypes.
Add status help for 202 Accepted. Rev to 0.8.