Made a couple of changes to Blender exporter. Here is commit comment:
Backstory: in a Blender scene, there is just an array of all actions (animations). Individual meshes, lights, cameras, skeletons do not own them. These objects just point to the action they are currently assigned. The original exporter, by @Deltakosh, only exported the currently assigned action.
This meant you could not have a character centric .blend where the character mesh could have many actions (run