Update lib.rs

Author: pmnoxx

src/lib.rs

@@ -256,6 +256,23 @@ impl AddAssign<ByteSize> for ByteSize {
     }
 }
 
+impl<T> Add<T> for ByteSize
+    where T: Into<u64> {
+    type Output = ByteSize;
+    #[inline(always)]
+    fn add(self, rhs: T) -> ByteSize {
+        ByteSize(self.0 + (rhs.into() as u64))
+    }
+}
+
+impl<T> AddAssign<T> for ByteSize
+    where T: Into<u64> {
+    #[inline(always)]
+    fn add_assign(&mut self, rhs: T) {
+        self.0 += rhs.into() as u64;
+    }
+}
+
 impl<T> Mul<T> for ByteSize
     where T: Into<u64> {
     type Output = ByteSize;