0.0.4-rc: fixed a bug in variable-size short field (rare situation and most often masked).

src/commonTest/kotlin/bintools/SmartintTest.kt

@@ -65,4 +65,14 @@ class SmartintTest {
         }
     }
 
+    @Test
+    fun testCustom() {
+        val x = 64000.toULong()
+        val p = Smartint.encodeUnsigned(x)
+        println(p.toDump())
+        val y = Smartint.decodeUnsigned(p)
+        println(y)
+        assertEquals(y, x)
+    }
+
 }