message: ENH: Doxygen use svg and mathjax
  Taken from
  InsightSoftwareConsortium/ITK@223219133f752a3307625f41b0fa3e0e8bab0f2d
diff: @@ -1532,7 +1532,7 @@ MATHJAX_FORMAT = HTML-CSS
  # The default value is: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.5/.
  # This tag requires that the tag USE_MATHJAX is set to YES.
  -MATHJAX_RELPATH = http://www.mathjax.org/mathjax
  +MATHJAX_RELPATH = https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.7/
  # The MATHJAX_EXTENSIONS tag can be used to specify one or more MathJax
  # extension names that should be enabled during MathJax rendering. For example
  @@ -2452,7 +2452,7 @@ DIRECTORY_GRAPH = YES
  # The default value is: png.
  # This tag requires that the tag HAVE_DOT is set to YES.
  -DOT_IMAGE_FORMAT = png
  +DOT_IMAGE_FORMAT = svg
  # If DOT_IMAGE_FORMAT is set to svg, then this option can be set to YES to
  # enable generation of interactive SVG images that allow zooming and panning.
  