Write file load/save helpers for Image

src/image.rs

@@ -111,3 +111,15 @@ impl From<std::io::Error> for Error {
         Error::Io(error)
     }
 }
+
+impl Image {
+	pub fn load<F: Format>(path: &str) -> Result<Image, Error> {
+		let file = std::fs::File::open(path)?;
+		F::read(&mut std::io::BufReader::new(file))
+	}
+
+	pub fn save<F: Format>(&self, path: &str) -> std::io::Result<()> {
+		let file = std::fs::File::create(path)?;
+		F::write(&mut std::io::BufWriter::new(file), self)
+	}
+}