pelican 3.7 + render_math not working, KeyError: 'MD_EXTENSIONS'

[chan-y-park]

Hi, I tried running pelican 3.7 with render_math plug-in, and got the following error:

Traceback (most recent call last):
  File "/home/chan/pelican-plugins/render_math/math.py", line 272, in mathjax_for_markdown
    pelicanobj.settings['MD_EXTENSIONS'].append(PelicanMathJaxExtension(config))
KeyError: 'MD_EXTENSIONS'

Error - the pelican mathjax markdown extension failed to configure. MathJax is non-functional.

I think MD_EXTENSIONS is deprecated in pelican 3.7, but don't know how to make the plug-in work with pelican 3.7.

[avaris]

See #787

[danmackinlay]

I think this can be closed.