Report validator configuration details, at user option

[AndrewSales]

Re

xvrl/sample/sample1.xml

Line 10 in 19438c4

<validator name="jing" version="1.0"/>

,
depending on the outcome, some configuration options (such as parser configuration) will be significant, so it would be useful to have this information reported, e.g.

<validator name='saxon' version='9.9'>
  <!-- saxon configuration file contents here -->
</validator>

[gimsieke]

Ok, let’s allow any.element* inside validator