Move date to @date tag below the @since tag.
Delete @lastmodified tag as pointless, easily out of sync, and screwing things up when collaborating.
Need to mention however that in many projects, the last modified datestamp is applied and maintained.
That said, some published files on the web out there contain edits post-dating their datestamp.
Fix 2 function docblock headings by dispatching them from the originally single metabox function docblock.
Also add version tags to the 2 metaboxes split off @since 2.2.0.
* Displays all options for the footnotes start and end tag short codes. (Initially called “Footnotes styling”.)
* Displays all options for the footnotes numbering. (Newly individualized.)
* Displays all options for the scrolling behavior. (Totally new as scroll offset and duration were initially hard-coded in the template.)
(This is part of WP coding standard compliance.)
