Apologies if this has been answered - I've spent some time searching but can't find anything.
I want to build a 'dashboard' type extension that modifies the new tab page. As an example everything the user opens a new tab in Safari they would see content generated by my extension (e.g. weather, news, traffic reports). Is this possible? I've taken a look through the docs which don't have any clues (although they're quite sparse).