ci: run clippy on all platforms, test docs build

Also update to checkout@v2

Author: Freaky

.github/workflows/ci.yml

@@ -1,27 +1,33 @@
 name: build
 on: [push]
 jobs:
-  check-fmt-clippy:
+  rustfmt-check:
     runs-on: ubuntu-latest
     steps:
+      - uses: actions/checkout@v2
       - uses: hecrj/setup-rust-action@v1
         with:
           rust-version: stable
-          components: "rustfmt,clippy"
-      - uses: actions/checkout@v1
-      - name: Check fmt and clippy
-        run: cargo fmt -- --check && cargo clippy -- -Dwarnings
+          components: rustfmt
+      - name: Check rustfmt
+        run: cargo fmt -- --check
   test:
     runs-on: ${{ matrix.os }}
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
         rust: [stable, nightly]
-
     steps:
+    - uses: actions/checkout@v2
     - uses: hecrj/setup-rust-action@v1
       with:
         rust-version: ${{ matrix.rust }}
-    - uses: actions/checkout@v1
+        components: clippy
+    - name: Check clippy
+      run: cargo clippy -- -Dwarnings
+    - name: Build
+      run: cargo build --verbose
+    - name: Build Docs
+      run: cargo doc --verbose
     - name: Run tests
       run: cargo test --verbose