Parse and interpret more OGP and other markup

[dshanske]

https://github.com/dshanske/indieweb-post-kinds/blob/master/includes/class-parse-this.php

I forked Press This and used it as the basis for the above class, which interprets additional parameters and passes them along. Might be worth reincorporating this work.

[kraftbj]

The 2.0.0 modernization includes enhanced metadata parsing that partially addresses this:

• JSON-LD structured data extraction (VideoObject, Article, WebPage, etc.)
• Enhanced Open Graph video metadata
• Multiple canonical URL sources

This doesn't incorporate the full Parse This class, but it's a step in the right direction. Leaving this open for potential future expansion.

Thank you for your work on Parse This—it helped inform some of these improvements.