* "native" formatting, json, arrays, object/structs, functions ...
* %q %U
* Java has a %n flag to print the plattform native newline... in POSIX
  that means "number of chars printed so far", though.
* use of Writer and Buffer internally in order to make FPrintf, Printf, etc.
  easier and more elegant.
* see "Discussion" in README

*scanf , pack,unpack, annotated hex
* error handling, consistantly
* probably rewrite, now that I konw how it's done.