- Removed old pyjaco core
 + Added support for String type
 - Removed all str() functions. Let's not mix view and model here
 + Added base multiplexer class
 * Split Compiler into Compiler and ISTCompiler to preserve single responsibility
 + Added initial version of IST python printer
 + Added simple IST test script
 - Removed old pyjaco code
 * Fixed stdlib: target in Makefile