Fix JSONEncoding for chars > 127
Sending raw byte strings made iTasks crash because characters outside the ASCII range were not escaped properly.
This is a quick fix. The JSON file format should be able to support any unicode character in the string but somewhere along the line this does not work. Escaping them is the safest way.
The following program was broken and isn't anymore:
module test import StdArray, iTasks Start w = startEngine (viewInformation ()  (toString [0..255])) w