Thanks for your answers.
I asked because I will include roon-extension-manager in my v3.0.0 release of rooExtend.
As there are some rooExtend users using the Harmony Hub I guess they will be happy to install the Deep Harmony Roon Extension using my rooExtend SD-Card image with v3.0.0
Another plus for me is that in this case I don‘t have to care about any sourcecode to make them happy 
