Redid sections

Separated out creating & displaying meta box, and updating the database
with the meta box values.
Added call for JavaScript file

Added call for the JavaScript file used to dynamically update the post
author data.
Fixed comments

Fixed comments by replacing ‘current user’ with ‘post author’
Added field and JavaScript check

Added a hidden field that contains the ID of the current post author,
for validation checking. Added a <noscript> section to inform the user
if they have JavaScript disabled.
Added JavaScript callback

Added a callback for the JavaScript that dynamically updates post
author info.
Check for changed post author

Check whether the post author was changed, and if so retrieve new post
author’s profile data and use those values for post-specific author
data.
Removed spacing

Removed spacing between functions.
Moved section

Moved the end of the section further up.
Added end-of-function comment

Added a comment at the end of the function to explain what the bracket
corresponds to.
Created file

Created the JavaScript file that will be used to dynamically update
post author data. No code is yet created for this file.