Use get_post_galleries() instead of get_content_galleries().
Pass the post content to hybrid_get_the_post_format_chat().
Remove audio and video post format functionality.
Update filter hook names to use the 'hybrid_' prefix.
Use the 'TextDomain' header set in 'style.css' to get the proper textdomain.  If not set, fall back to get_template() and get_stylesheet().
No need to pass parameters to wp_get_theme() when dealing with the stylesheet (child/active) theme directory.
Add the Hybrid Media Grabber script for fetching media related to the post.  This script is for getting media embedded into the post content in various ways (shortcodes, HTML, autoembed, etc.) or getting media attached to the post.  It consolidates all methods of using audio/video media in posts that WordPress currently supports as of the current trunk.
Just use the first parameter of wp_get_theme() when grabbing info about the parent theme.
Add the ability to split the media from the content.  This should make some cool design ideas possible.
Separate the functionality from get_media() into a new method called set_media().  This will give developers a little more flexibility if they want to overwrite the class or access the object directly instead of just calling the wrapper function.

Plus, a little extra documentation.
Don't use array_shift() a second time.  Documentation updates.
Update method names for consistency.
Add the 'hybrid_media_grabber_args' and 'hybrid_media_grabber_media' hooks.
apply_filters(), not add_filter().
Use $this->type instead of hardcoding 'audio' and 'video'.
Need space at the end of the 'browse' argument.
No need to remove shortcodes when 'the_content' is called.  It's just extra stuff being processed and isn't required by the WP theme review.
Allow the passing of the post ID ('post_id' arg) for getting a specific post's media.  This also means we dropped get_the_content() in favor of get_post_field() for grabbing the post content since it supports a specific post ID and doesn't assume we're in The Loop.
Update deprecated post format functions to return the correct post format functions.
Update breadcrumb labels to handle time-/date-based archives.