Multiple (see description)

1. FORMAT, COMPILE. RETURN-FROM, CLONE special forms added
2. Compiler adds source statement to generated VM code (to make
backtrace more meaningful)
3. Fixed bug in equal()
4.  Matrix library added
5. Heap size increased to 64MB
6. Enhancements/fixes to core library (plisp.lisp)
7. Syntax errors was handled as assert(false). Fixed.
8. PRINTLN added as util function
Added license text