FYI lwDITA post in WriteTheDocs Slack

["Dana Aubin" <dana.aubin@comtech-serv.com>]

In the WriteTheDocs Slack, there are channels for markdown and DITA, but very few posts. However, someone posted this a few days ago. 

I did some MDITA testing today with DITA 4.0.2 and discovered that:
- conrefs from one MDITA file to another now work (or I tested this wrong previously)
- conditional processing works in MDITA, but you have to use @props in your ditaval file, not @data-props like the proposed spec says. You have to use the latter in the MDITA source though. I just filed a bug about this against the LwDITA plugin.