Updated comment

Expanded the comment to better explain the code
Restructured entries for form items

Added ‘select’ as an element to be styled, and moved margin away from
width
Added '$postauthorid' variable

Added a variable for the post author ID.
Restructured post author variables

Removed the $currentuserid variable, and renamed $currentuser to
$postauthor
Renamed variable

Updated calls to use renamed variable ($currentuser to $postauthor)
Added author dropdown menu

Added a dropdown menu to select the post author. Defaults to the
current post author.
Updated WYSIWYG editor options

Specified the buttons that should be shown, disabled quicktags.
Added section for saving post author

Added section to cc_author_save_meta() to save the post author. Code to
save the post author is not yet written.
Added function cc_author_author_displayname()

Created the function to retrieve and apply the display name for the
post author from post meta.