Make mixin syntax consistent.
Fix consistency of spacing in the code.
Float the avatar to the left in status posts.
Reduce max-width to 40 rem for the moment so measure doesn't become too large.
Put the thumbnail image inside the entry-summary div for standard posts.
Float the thumbnail image to the right on standard posts.
Narrow the margins on the manual excerpts when they are displayed above a singular post.
Change the widget width to better work with the narrower body width.
Correct a comment about the conditional checks.
Change the markup and code on post formats so that all media elements on non-singular pages get wrapped inside the entry-summary div.
Make Genericons align to the text baseline and inherit text styles.