Improvements (#24)

* Remove manual `Debug` impl for `InternalError`

* Remove unnecessary `#[macro_use]`

* Remove unnecessary  `tuple` handling in macro

* Improve serialization macro impl

* Improve `impl_traits_for` macro

* Re-direct `Drop` implementation

* Improve macro readability

* Fix rustdoc warnings

* Rust 1.51 has no support for `rustdoc` lints

* Change `i2osp` output to `GenericArray` from `Vec`

* Reduce calls to `to_vec()` and simplify conversion

* Adding zeroize tests

Co-authored-by: Kevin Lewi <[email protected]>

.github/workflows/main.yml

@@ -91,6 +91,14 @@ jobs:
           command: clippy
           args: --all-targets -- -D warnings
 
+      - name: Run cargo doc
+        uses: actions-rs/cargo@v1
+        env:
+          RUSTDOCFLAGS: -D warnings
+        with:
+          command: doc
+          args: --no-deps --document-private-items
+
 
   format:
     name: cargo fmt