Show the sidebar
Hide bullet points in the sidebar
Remove categories from permalinks
Add an archive page (and sidebar link to it)
Make some heading styles specific to #content
Use "Month Year" format to group archive entries
Use the article element for blog posts
Use the "meta" class for dates in the blog index
Add an (empty) footer to posts in the blog index
Remove empty lines in index.html
Make the styles in _footer.sass specific to #site
Add _post.sass for styles specific to blog posts
Move heading margins from _typography to _post
Replace padding with margins after blog posts
Use (larger) responsive margins for #main
Remove padding at the top and bottom of #content
Remove margins from list items in the sidebar
Add an #archive div
Add #archive styles (h1 margins)
Re-style archive listings using .time and .link