Add CI

.github/dependabot.yml

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+version: 2
+updates:
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: daily
+    timezone: Etc/UTC
+  open-pull-requests-limit: 10
+  labels:
+  - "A-CI"

.github/workflows/ci.yml

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+name: CI checks
+
+on: [push, pull_request]
+
+jobs:
+  test:
+    name: Test on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run tests
+        run: cargo test --all-features --verbose
+      - name: Verify working directory is clean
+        run: git diff --exit-code
+
+  build-latest:
+    name: Latest build on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        id: toolchain
+      - run: rustup override set ${{steps.toolchain.outputs.name}}
+      - name: Remove lockfile to build with latest dependencies
+        run: rm Cargo.lock
+      - name: Build crate
+        run: cargo build --all-targets --all-features --verbose
+      - name: Verify working directory is clean (excluding lockfile)
+        run: git diff --exit-code ':!Cargo.lock'
+
+  build-nodefault:
+    name: Build target ${{ matrix.target }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        target:
+          - wasm32-wasi
+    steps:
+      - uses: actions/checkout@v4
+      - name: Add target
+        run: rustup target add ${{ matrix.target }}
+      - name: Build crate
+        run: cargo build --no-default-features --verbose --target ${{ matrix.target }}
+
+  clippy:
+    name: Clippy (MSRV)
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Run Clippy
+        uses: auguwu/[email protected]
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          working-directory: ${{ inputs.target }}
+          deny: warnings
+
+  doc-links:
+    name: Intra-doc links
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: cargo fetch
+      # Requires #![deny(rustdoc::broken_intra_doc_links)] in crate.
+      - name: Check intra-doc links
+        run: cargo doc --all-features --document-private-items
+
+  fmt:
+    name: Rustfmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Check formatting
+        run: cargo fmt -- --check

rust-toolchain.toml

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+[toolchain]
+channel = "1.56.0"
+components = ["clippy", "rustfmt"]

src/lib.rs

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+#![deny(rustdoc::broken_intra_doc_links)]