Make possible to add regions wrapper html elements

This ads a container to the region, is this what you requested?

Thanks for the patch - but it's a little different then what I was thinking.

I can now edit the separator which is useful, but I would like to control a wrapper for the panel region. The reason I'd like to do this would be to apply grid layouts to the panels inside the region by controlling the css that wraps them. So I'm not putting specific grid classes on each panel pane, but it would be helpful to wrap the region itself.

So by default panels creates something similar to this.

<div class="panel_region">
   <div class="panel_pane><p>some content 1</p></div>
   <div class="panel_pane><p>some content 2</p></div>
</div>

It would be great to be able to customize the panel region like this

<section class="custom-grid-3columns">
   <div class="panel_pane><p>some content 1</p></div>
   <div class="panel_pane><p>some content 2</p></div>
</section>

Which may not be possible, so a second option would look like this

<div class="panel_region">
  <section class="custom-grid-3columns">
     <div class="panel_pane><p>some content 1</p></div>
     <div class="panel_pane><p>some content 2</p></div>
  </section>
</div>

Option 1 is better with less markup-cruft, but option 2 is fine as well. Basically by creating a series of grid class I could then more easily manipulate the layout of panel panes in a region but changing the class of the wrapper

You may check Clean Markup Module which allows to select a wrapper and assign classes to it.

Thanks - That looks like what I need.

But maybe the patch is interesting for someone else, like drupov, who opened the issue?