whitespace: tabs to spaces
functions: library -> hybrid-core
hybrid base dynamic

we don't output placeholder elements in child themes
functions: add layout-1c-post-slug body class for landing and sales pages
content: is_singular view usually needs featured image display
index: implement #content wrap ability with filter
loop: make comments_template filterable

comments_template() does a whole lot of work before comments can be
turned off [1]. maybe with caching it doesn't matter?

[1] http://core.trac.wordpress.org/browser/tags/3.6/wp-includes/comment-template.php#L848
header: implement header wrap + class filter
footer: implement footer wrap + class filter
sidebar-*: implement sidebar_class filter
functions: implement one-column layout
index: implement content_class filter