Added iterable objects

__iter and __next are now reserved IStrings, OP_NEXT and OP_ITER have also been added. A new token (TOKEN_IN) has been added to the lexer. The parser now supports the for each loop (for i, ... in <object> do ... end).
savedPushed has been removed from the CCompilerState struct.

src/coperators.h

@@ -36,6 +36,8 @@ typedef enum {
     OP_SETOBJECT,
     OP_GETOBJECT,
     OP_INVOKE,
+    OP_ITER, // if stack[top] is an object, __iter is expected and called, else if stack[top] is a dictionary a dummy iterator object is made (SEE: cosmoV_makeIter())
+    OP_NEXT, // if stack[top] is an object, __next is expected and called, expecting uint8_t return values. if stack[top] after calling is nil, jump uint16_t
 
     // ARITHMETIC
     OP_ADD,