Add filenames to rio-bounds output.
Add filenames to rio-bounds output.

clembou/rasterio,kapadia/rasterio,kapadia/rasterio,johanvdw/rasterio,njwilson23/rasterio,njwilson23/rasterio,brendan-ward/rasterio,youngpm/rasterio,perrygeo/rasterio,perrygeo/rasterio,perrygeo/rasterio,johanvdw/rasterio,njwilson23/rasterio,youngpm/rasterio,youngpm/rasterio,brendan-ward/rasterio,kapadia/rasterio,clembou/rasterio,clembou/rasterio,johanvdw/rasterio,brendan-ward/rasterio