sonsi - Stupid and Obvious Non-recursive Scheme Interpreter

	Commit message (Expand)	Author	Age
*	add gc in `PromObj` and `Continuation`	Teddy	2013-08-13
*	fixed a mem leak in parser.cpp	Teddy	2013-08-13
*	add the middle class: `Container` to help resolve circular issues	Teddy	2013-08-13
*	fixed severe bug in many special opts	Teddy	2013-08-11
*	added more comments	Teddy	2013-08-11
*	...	Teddy	2013-08-11
*	fixed `next` pointer and `ext_repr` issues	Teddy	2013-08-11
*	`delay` and `force` support is added	Teddy	2013-08-11
*	`apply` and `or` support	Teddy	2013-08-11
*	more built-ins	Teddy	2013-08-10
*	removed trailing spaces	Teddy	2013-08-09
*	added `and` operator	Teddy	2013-08-09
*	removed `skip` field from Pair, use `next` to make jumps insteadskip_removal	Teddy	2013-08-09
*	...	Teddy	2013-08-09
*	deal with circular reference	Teddy	2013-08-09
*	change the name from CONS_OBJ to PAIR_OBJnew_ext	Teddy	2013-08-08
*	support for equal?	Teddy	2013-08-08
*	new ext_repr() approach	Teddy	2013-08-08
*	rectified some names	Teddy	2013-08-08
*	eqv? is implemented	Teddy	2013-08-08
*	fixed a bug in ProcObj::call	Teddy	2013-08-08
*	`lambda` and `define` are fully supported now	Teddy	2013-08-08
*	fixed a severe bug in `define`	Teddy	2013-08-07
*	list checking fix	Teddy	2013-08-07
*	dot sign support in literal mode	Teddy	2013-08-06
*	added and restructured built-in procedures	Teddy	2013-08-06
*	boolean and char are now supported	Teddy	2013-08-06
*	vector, literal support!	Teddy	2013-08-06
*	added support for string	Teddy	2013-08-05
*	added more built-in procedures	Teddy	2013-08-05
*	complex, real, rational, integral number support	Teddy	2013-08-05
*	added list support	Teddy	2013-08-05
*	added support for `cons`, `car`, `cdr`	Teddy	2013-08-04
*	added more error report	Teddy	2013-08-04
*	added exception facilities	Teddy	2013-08-04
*	replaced many `dynamic_cast` to `static_cast`	Teddy	2013-08-04
*	modified the API of Env: add_binding	Teddy	2013-08-04
*	added more docs	Teddy	2013-08-04
*	C++ version now works!	Teddy	2013-08-03
*	AST parser can now work!	Teddy	2013-08-03
*	transfering the implementation language to C++	Teddy	2013-08-02