diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2468f4f..5fad259 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -32,17 +32,9 @@ jobs:
       - name: Clippy
         run: cargo clippy --all
 
-  test:
-    name: Test MSRV
-    runs-on: ${{ matrix.os }}
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [windows-latest]
-        toolchain: [stable]
-        include:
-          - os: ubuntu-latest
-            toolchain: "1.56.0"
+  stable:
+    name: Stable on Windows
+    runs-on: windows-latest
 
     steps:
       - uses: actions/checkout@v2
@@ -50,7 +42,7 @@ jobs:
         uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: ${{ matrix.toolchain }}
+          toolchain: stable
           override: true
           components: clippy
 
@@ -58,3 +50,20 @@ jobs:
         run: cargo test --all-features
       - name: Clippy (stable)
         run: cargo clippy --all -- -D warnings -A unknown_lints
+
+  msrv:
+    name: MSRV
+    runs-on: macos-latest
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: "1.56.0"
+          override: true
+          components: clippy
+
+      - name: Test
+        run: cargo test --all-features --lib --tests
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..e96a26a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# Changelog
+The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## [0.1.0] — 2022-03-21
+
+New release, including the `autoimpl` macro (extracted from `kas-macros` crate).
diff --git a/Cargo.toml b/Cargo.toml
index a0e9176..1d5a31c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,10 +1,10 @@
 [package]
 name = "impl-tools"
-version = "0.0.0"
+version = "0.1.0"
 authors = ["Diggory Hardy <git@dhardy.name>"]
 edition = "2021"
 license = "MIT/Apache-2.0"
-description = "A set of helper macros"
+description = "Helper macros: autoimpl"
 keywords = ["proc-macro", "macro", "derive", "trait", "procedural"]
 categories = ["development-tools::procedural-macro-helpers"]
 repository = "https://github.com/kas-gui/impl-tools"
@@ -24,3 +24,6 @@ version = "1.0.14"
 # We need 'extra-traits' for equality testing
 # We need 'full' for parsing macros within macro arguments
 features = ["extra-traits", "full"]
+
+[dev-dependencies]
+doc-comment = "0.3.3"
diff --git a/README.md b/README.md
index ce080a8..7705b7c 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,59 @@ Impltools
 A set of helper macros
 
 
+Macros
+------
+
+### Autoimpl
+
+`#[autoimpl]` is a variant of `#[derive]`, supporting:
+
+-   explicit generic parameter bounds
+-   ignored fields
+-   traits defined using a primary field
+-   generic re-implementations for traits
+
+```rust
+# use impl_tools::autoimpl;
+# use std::fmt::Debug;
+
+#[autoimpl(for<'a, T: trait + ?Sized> Box<T>)]
+// Generates: impl<'a, T: trait + ?Sized> Animal for Box<T> { .. }
+trait Animal {
+    fn number_of_legs(&self) -> u32;
+}
+
+#[autoimpl(Debug ignore self.animal where T: Debug)]
+// Generates: impl<T, A: Animal> std::fmt::Debug for Named<A> where T: Debug { .. }
+#[autoimpl(Deref, DerefMut using self.animal)]
+// Generates: impl<T, A: Animal> std::ops::Deref for Named<A> { .. }
+// Generates: impl<T, A: Animal> std::ops::DerefMut for Named<A> { .. }
+struct Named<T, A: Animal> {
+    name: T,
+    animal: A,
+}
+
+fn main() {
+    struct Fish;
+    impl Animal for Fish {
+        fn number_of_legs(&self) -> u32 {
+            0
+        }
+    }
+
+    let my_fish = Named {
+        name: "Nemo",
+        animal: Box::new(Fish),
+    };
+
+    assert_eq!(
+        format!("{my_fish:?} has {} legs!", my_fish.number_of_legs()),
+        r#"Named { name: "Nemo", .. } has 0 legs!"#
+    );
+}
+```
+
+
 Minimum Supported Rust Version
 ------------------------------
 
diff --git a/src/lib.rs b/src/lib.rs
index 1df328a..8b54f77 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,6 +4,58 @@
 //     https://www.apache.org/licenses/LICENSE-2.0
 
 //! # Impl-tools
+//!
+//! ## Autoimpl
+//!
+//! `#[autoimpl]` is a variant of `#[derive]`, supporting:
+//!
+//! -   explicit generic parameter bounds
+//! -   ignored fields
+//! -   traits defined using a primary field
+//! -   generic re-implementations for traits
+//!
+//! ```
+//! # use impl_tools::autoimpl;
+//! # use std::fmt::Debug;
+//!
+//! #[autoimpl(for<'a, T: trait + ?Sized> Box<T>)]
+//! // Generates: impl<'a, T: trait + ?Sized> Animal for Box<T> { .. }
+//! trait Animal {
+//!     fn number_of_legs(&self) -> u32;
+//! }
+//!
+//! #[autoimpl(Debug ignore self.animal where T: Debug)]
+//! // Generates: impl<T, A: Animal> std::fmt::Debug for Named<A> where T: Debug { .. }
+//! #[autoimpl(Deref, DerefMut using self.animal)]
+//! // Generates: impl<T, A: Animal> std::ops::Deref for Named<A> { .. }
+//! // Generates: impl<T, A: Animal> std::ops::DerefMut for Named<A> { .. }
+//! struct Named<T, A: Animal> {
+//!     name: T,
+//!     animal: A,
+//! }
+//!
+//! fn main() {
+//!     struct Fish;
+//!     impl Animal for Fish {
+//!         fn number_of_legs(&self) -> u32 {
+//!             0
+//!         }
+//!     }
+//!
+//!     let my_fish = Named {
+//!         name: "Nemo",
+//!         animal: Box::new(Fish),
+//!     };
+//!
+//!     assert_eq!(
+//!         format!("{my_fish:?} has {} legs!", my_fish.number_of_legs()),
+//!         r#"Named { name: "Nemo", .. } has 0 legs!"#
+//!     );
+//! }
+//! ```
+
+#[cfg(doctest)]
+doc_comment::doctest!("../README.md");
 
 extern crate proc_macro;