Introduce boolean types

tests/test.qbl

@@ -1,5 +1,6 @@
 //valid
-//output: Hello, World!\n4242test2Falsetesttesttest
+//output: Hello, World!
+//4242test2Falsetesttesttest
 
 "Hello, World!\n" print 43 foo foo deq
 
@@ -10,12 +11,12 @@ function any => int foo
 	deq 42 17 print
 }
 
-"test2" print 1
+"test2" print false
 check
 print
 
 
-function int => str check
+function bool => str check
 {
 	if
 	{
@@ -27,20 +28,14 @@ function int => str check
 	}
 }
 
-// 3
-// 3 3
-// 3
-// 3 1
-// 2
-// 2 "test"
-// "test" 2
-
 function int => whileFunction
 {
 	dup
-	while
+	0 req >
+	req while
 	{
-		1 - "test" req print dup
+		1 - 0 dup >
+		"test" req req print req
 	}
 	deq
 }

tests/while.qbl

@@ -1,12 +1,21 @@
 //valid,output:10987654321
 
-12 while
+true while
 {
-	0
+	false
 }
 
-10 dup while
+10 0 dup > req
+while
 {
-	dup print 1 - dup
+	dup print
+	
+	1 - 0 dup > req
 }
-deq
+deq
+
+true true true while
+{
+	false
+}
+print print