That also makes it really easy to concatenate them, either `cp a.yaml + b.yaml c.yaml` or just `cat a.yaml >> b.yaml` - which is quite nice, compared to trying

That also makes it really easy to concatenate them, either `cp a.yaml + b.yaml c.yaml` or just `cat a.yaml >> b.yaml` - which is quite nice, compared to trying to do this with JSON etc... files.