See #4475.
+ PDFPIC is now used for PDF images in figures.
+ Inline images that are postscript or PDF are rendered using
PSPIC or PDFPIC. This isn't ideal, because they will still be
rendered as if in a separate paragraph, but it's probably
better than just printing the image name.
+ Units are included in height.
For further improvement, we might consider in Text.Pandoc.PDF
using something like `convertImages` (which we currently use for
converting to PDF via LaTeX) to convert SVG (and other?) images
to PDF so they can be rendered in this way.
John MacFarlane
3ff206cc4b
