Improved type system

examples/array/array.q

@@ -10,5 +10,5 @@ main() {
 	address[3] = 'l'
 	address[4] = 'o'
 	sys.write(1, address, length)
-	mem.free(address, length)
+	mem.free(address)
 }

examples/echo/echo.q

@@ -9,7 +9,7 @@ main() {
 		n := sys.read(0, address, length)
 
 		if n <= 0 {
-			mem.free(address, length)
+			mem.free(address)
 			return
 		}
 

examples/point/point.q

@@ -30,5 +30,5 @@ print(p *Point) {
 	out[6] = '0' + p.y
 	out[7] = '\n'
 	sys.write(1, out, 8)
-	mem.free(out, 8)
+	mem.free(out)
 }