Flexdashboard compatibility

[taf-lux]

Hi!
Thank you very much for this amazing package.
However, I noticed that it is not compatible with flexdashboard (to build up serverless dashboards as R markdown).
I tried multiple approaches (this one included without success. The edgebundleR is included in the output (inspecting the html code), but the it is not rendered like other htmlwidgets (such as the ones of echarts and networkD3).