Remove non-blog posts from the blog feed
Rename the "post" layout to "blog"

Everything in jekyll is a post, so that was a crap name.
Rename category_index.html layout to just category.html
Create _includes/gifs directory to tidy up gifs includes
Move full-size GIFs template into _includes
Move post.html into the blog directory in _includes
Move links template into _includes/links
Tidy up some RSS feed code
Baleeted
Valid XML in RSS feeds
Reinstate an older post about one-off scripts