Panini.refresh() does not update partials when only line order is changed.

Hi, I have a header.html with a dropdown menu, which looks like this:

```

```
This file is included in the default layout, with {{> header}}.

If I change the order of the menu items, moving the menu items around, the final page is not updated, but if I change a character it works as expected. The refresh function is called by Gulp, but it does not correctly refresh the changes in the partial.

```
[BS] Reloading Browsers...
[22:24:28] Finished 'reload' after 895 μs
[22:24:31] Starting 'resetPages'...
[22:24:31] Finished 'resetPages' after 10 ms
[22:24:31] Starting 'pages'...
[22:24:31] Finished 'pages' after 36 ms
[22:24:31] Starting 'reload'...

```
Also, if I change a page, only that page gets the updated partials, while older pages that did not change still get the old header.