Replaced the queue of Token pointers with values.

We were getting memory leaks (as told by the CRT detectors, which I also added), and there's really no reason (as long as we're careful) to use pointers there.

include/crt.h

@@ -0,0 +1,10 @@
+#pragma once
+
+// for memory leaks
+#ifdef _DEBUG
+
+#define _CRTDBG_MAP_ALLOC
+#include <stdlib.h>
+#include <crtdbg.h>
+
+#endif // _DEBUG

include/exceptions.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include <exception>
+#include <string>
 
 namespace YAML
 {
@@ -9,6 +10,7 @@ namespace YAML
 	public:
 		ParserException(int line_, int column_, const std::string& msg_)
 			: line(line_), column(column_), msg(msg_) {}
+
 		int line, column;
 		std::string msg;
 	};

include/yaml.h

@@ -0,0 +1,6 @@
+#pragma once
+
+#include "crt.h"
+#include "parser.h"
+#include "node.h"
+#include "exceptions.h"