Up version to 0.25a1.
Up version to 0.25a1.

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