Backwards-compat test for MD_EXTENSIONS.
Backwards-compat test for MD_EXTENSIONS.

danmackinlay/pelican-plugins,howthebodyworks/pelican-plugins,howthebodyworks/pelican-plugins,danmackinlay/pelican-plugins,howthebodyworks/pelican-plugins,danmackinlay/pelican-plugins,danmackinlay/pelican-plugins,howthebodyworks/pelican-plugins