finalize gix-shallow crate

Author: Byron

README.md

@@ -135,9 +135,10 @@ is usable to some extent.
   * [gix-worktree-state](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-worktree-state)
   * [gix-date](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-date)
   * [gix-dir](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-dir)
+  * [gix-merge](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-merge)
+  * [gix-shallow](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-shallow)
   * `gitoxide-core`
 * **very early**  _(possibly without any documentation and many rough edges)_
-  * [gix-merge](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-merge)
 * **idea** _(just a name placeholder)_
   * [gix-note](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-note)
   * [gix-fetchhead](https://github.com/GitoxideLabs/gitoxide/blob/main/crate-status.md#gix-fetchhead)

crate-status.md

@@ -375,6 +375,10 @@ Check out the [performance discussion][gix-traverse-performance] as well.
 
 [gix-traverse-performance]: https://github.com/GitoxideLabs/gitoxide/discussions/76
 
+### gix-shallow
+
+A utility crate with types and functionality related to shallow-file handling.
+
 ### gix-url
 * As documented here: https://www.git-scm.com/docs/git-clone#_git_urls
 * **parse**

gix-shallow/src/lib.rs

@@ -1,5 +1,6 @@
 //! [Read](read()) and [write](write()) shallow files, while performing typical operations on them.
 #![deny(missing_docs, rust_2018_idioms)]
+#![forbid(unsafe_code)]
 
 /// An instruction on how to
 #[derive(PartialEq, Eq, Debug, Hash, Ord, PartialOrd, Clone, Copy)]