Add & fix CI (#60)

.github/workflows/ci.yml

@@ -2,62 +2,36 @@ name: CI
 
 on:
   push:
+    branches: [ main ]
   pull_request:
-
-env:
-  CARGO_TERM_COLOR: always
+    branches: [ main ]
 
 jobs:
   build-and-test:
-    name: Build & Test (stable, beta, nightly)
     runs-on: ubuntu-latest
 
-    strategy:
-      matrix:
-        toolchain: [stable, beta, nightly]
-
     steps:
-      - uses: actions/checkout@v4
+    - name: Checkout code
+      uses: actions/checkout@v4
+      with:
+        submodules: recursive
 
-      - name: Install toolchain
-        uses: actions/setup-rust@v1
-        with:
-          toolchain: ${{ matrix.toolchain }}
-          components: clippy
+    - name: Install Rust nightly
+      uses: dtolnay/rust-toolchain@nightly
 
-      - name: Cache cargo registry
-        uses: actions/cache@v3
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-registry-
+    - name: Cache cargo dependencies
+      uses: actions/cache@v4
+      with:
+        path: |
+          ~/.cargo/registry
+          ~/.cargo/git
+          target
+        key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+        restore-keys: |
+          ${{ runner.os }}-cargo-
 
-      - name: Cargo fmt check
-        run: cargo fmt --all -- --check
+    - name: Build
+      run: cargo build --all-targets
 
-      - name: Build
-        run: cargo build --all-targets --verbose
-
-      - name: Run tests
-        run: cargo test --all-targets --verbose
-
-      - name: Run Clippy
-        run: cargo clippy --all-targets -- -D warnings
-
-  docs:
-    name: Check Documentation
-    runs-on: ubuntu-latest
-    needs: build-and-test
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-rust@v1
-        with:
-          toolchain: stable
-
-      - name: Build docs
-        run: cargo doc --all --no-deps --verbose
+    - name: Run tests
+      run: cargo test --all