feat: Add Default trait

src/fs/dir_builder.rs

@@ -14,7 +14,7 @@ use crate::task::blocking;
 ///
 /// [`os::unix::fs::DirBuilderExt`]: ../os/unix/fs/trait.DirBuilderExt.html
 /// [`std::fs::DirBuilder`]: https://doc.rust-lang.org/std/fs/struct.DirBuilder.html
-#[derive(Debug)]
+#[derive(Debug, Default)]
 pub struct DirBuilder {
     /// Set to `true` if non-existent parent directories should be created.
     recursive: bool,

src/fs/open_options.rs

@@ -290,6 +290,12 @@ impl OpenOptions {
     }
 }
 
+impl Default for OpenOptions {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 cfg_if! {
     if #[cfg(feature = "docs")] {
         use crate::os::unix::fs::OpenOptionsExt;