add ci

.github/workflows/ci.yaml

@@ -0,0 +1,110 @@
+name: Continuous Integration
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+    tags:
+      - v*
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  conformance:
+    name: Conformance
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Cache Rust
+        uses: actions/cache@v3
+        with:
+          key: ${{ runner.os }}-nightly-${{ hashFiles('Cargo.toml') }}
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: nightly
+          components: rustfmt, clippy
+          override: true
+
+      - name: Rustfmt
+        uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --check
+
+      - name: Clippy
+        uses: actions-rs/cargo@v1
+        with:
+          command: clippy
+          args: -- --deny warnings
+
+  test:
+    strategy:
+      matrix:
+        os:
+          - windows-latest
+          - macos-latest
+          - ubuntu-latest
+
+    name: Test (${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Cache Rust
+        uses: actions/cache@v3
+        with:
+          key: ${{ runner.os }}-${{ matrix.rust }}-${{ hashFiles('Cargo.toml') }}
+          path: |
+            ~/.cargo/bin/
+            ~/.cargo/registry/index/
+            ~/.cargo/registry/cache/
+            ~/.cargo/git/db/
+            target/
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Test Rust
+        uses: actions-rs/cargo@v1
+        with:
+          command: test
+
+  publish-crate:
+    if: startsWith(github.ref, 'refs/tags/v')
+    needs: [ conformance, test ]
+
+    name: Publish to Crates.io
+    runs-on: "ubuntu-latest"
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+
+      - name: Publish
+        run: cargo publish --token ${REGISTRY_TOKEN}
+        env:
+          REGISTRY_TOKEN: ${{ secrets.REGISTRY_TOKEN }}