MathML doesn't get transformed into the desired output

[RaceProUK]

If I post

<math xmlns="http://www.w3.org/1998/Math/MathML">
<matrix>
  <matrixrow>
    <cn> 0 </cn> <cn> 1 </cn> <cn> 0 </cn>
  </matrixrow>
  <matrixrow>
    <cn> 0 </cn> <cn> 0 </cn> <cn> 1 </cn>
  </matrixrow>
  <matrixrow>
    <cn> 1 </cn> <cn> 0 </cn> <cn> 0 </cn>
  </matrixrow>
</matrix>
</math>

it doesn't get rendered as a matrix, instead just printing the raw numbers spaced out.

Reporting here in case it's a plugin issue; if not, I can report on meta.d instead.

[RaceProUK]

Config same as issue #24

[dpvc]

This markup is Content MathML rather than Presentation MathML. In order to process Content MathML, you need to include the content-mathml extension. Alter your configuration to include

MathML: {
  extensions: ["content-mathml.js"]
}

and that should allow this to produce the desired matrix.