Explosions are on the way with the next update, decals are already possible to do (Check the Youtube texturing tutorial)
Shadows are a behavior which should be assigned to a light.
The mistake that I've been making is that I've kept implementing a lot of features that I can't even remember, but I only tested them out in Chrome. And I didn't do any tutorials on those because I hadn't got any time and I still struggle to find a time to work on the tutorials in depth.
In the process I've learned a lot of things regarding cross-browser compatibility, and I've rewritten the whole plugin to make sure that every single function works on all browsers.
I'm not going to release it until I've completed my tutorials series and linked some capx templates with it.