Breadcrumb class

Converted breadcrumb functions to a static class.
Need to replace <?php breadcrumb(); ?> in template content.phtml
with <?php Breadcrumb::getTrail(); ?>

Only minor changes to create a class, no changes to the breadcrumb logic.
Decided to make it all static to make the calling from content.phtml (or wherever) simpler, just one php function, no need to instantiate an object.
Let me know what you think?