CI verifies that docs can be built (#404)

Author: Byron

.github/workflows/main.yml

@@ -55,13 +55,14 @@ jobs:
       if: matrix.build == 'stable' 
 
   rustfmt:
-    name: Rustfmt
+    name: Rustfmt & Docs
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
     - name: Install Rust
       run: rustup update stable && rustup default stable && rustup component add rustfmt
     - run: cargo fmt -- --check
+    - run: cargo doc --all-features
 
   wasm:
     name: WebAssembly