{#- Document head.
Driven entirely by Jinja globals set in make_environment, plus per-page
overrides passed to render_page:
required site_title, description, base_url
per page page_title, page_description, canonical_path
optional og_type, og_description, og_image, feed_url,
favicon_text, favicon_font_size
og_description falls back to page_description then description, so a site
that wants one social blurb for the whole site sets it once as a global.
-#}
{% if page_title %}{{ page_title }} · {{ site_title }}{% else %}{{ site_title }}{% endif %}
{% if og_image %}
{% endif %}
{% if feed_url %}
{% endif %}