Try to fix palette resizing

level/palette_test.go

@@ -0,0 +1,18 @@
+package level
+
+import (
+	"testing"
+)
+
+func TestPaletteResize(t *testing.T) {
+	container := NewStatesPaletteContainer(16*16*16, 0)
+
+	for i := 0; i < 4096; i++ {
+		container.Set(i, BlocksState(i))
+	}
+	for i := 0; i < 4096; i++ {
+		if container.Get(i) != BlocksState(i) {
+			t.Errorf("Get Error, got: %v,but expect: %v", container.Get(i), BlocksState(i))
+		}
+	}
+}