Add an icon to the comment reply cancel link
Better comment form spacing
Don't set the base font-size to 62.5%

It was set so 16px = 1rem but since a mixin is used to generate the rem
size anyway, there’s no need to have it set.
Make sure the search submit button doesn't break into two lines
Navigation: Better contrast on hovered menu items
Secondary navigation: Better contrast for the current menu item
Fix low contrast on the active menu toggle button
Use the correct function name for the pagination

Changed in https://core.trac.wordpress.org/changeset/30823/trunk
Remove duplicate arrow in the attachment parent link

The arrow is added with CSS.
Remove HTML from a translatable string