Add crates.io publishing to release workflow (#12)

* Add crates.io publishing to release workflow

Automatically publish to crates.io when version changes on main. Also add cargo install as the simplest installation option for users with Rust.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

* Bump version to 0.3.2

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>

Author: rwdaigle

.github/workflows/ci.yml

@@ -174,3 +174,22 @@ jobs:
           files: migrate-${{ matrix.target }}*
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+  publish-crate:
+    if: needs.release.outputs.changed == 'true' && needs.release.outputs.tag_exists != 'true'
+    needs: release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Rust
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+
+      - name: Publish to crates.io
+        run: cargo publish
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "migrate"
-version = "0.3.1"
+version = "0.3.2"
 edition = "2021"
 description = "Generic file migration tool for applying ordered transformations to a project directory"
 license = "MIT"

Cargo.toml

@@ -27,10 +27,16 @@ cargo install cargo-binstall
 cargo binstall migrate
 ```
 
-### Option 3: Build from source
+### Option 3: cargo install
 
 Requires [Rust](https://rustup.rs):
 
+```bash
+cargo install migrate
+```
+
+### Option 4: Build from source
+
 ```bash
 cargo install --git https://github.com/glideapps/migrate
 ```