Allow for nicely formatted, automagic zine versions of posted articles

[alurban]

This PR allows for nicely formatted, automagically generated zine versions of posted articles.

The underlying tools are based on Pandoc, a tool that converts between common formats (most notably HTML, markdown, and PDF) and XeTeX, a modern LaTeX distribution. Some conditioning of the intermediary markdown text is also done using regular expressions in Python.

The basic order of operations is:

• Use Pandoc to scrape the posted HTML into markdown, capturing the article's images and references
• Use Python to strip nonsense text from the HTML header and footer, and other minor reformatting
• Use Pandoc to render a PDF via LaTeX

All the heavy lifting is done in a LaTeX template used to achieve this last step.

This is related to #5.

[alurban]

LGTM and this is a great addition, incredible work me!

[alurban]

LGTM and this is a great addition, incredible work me!

thanks me 🥰