message: Add workflow for testing with approx feature
diff: @@ -125,3 +125,19 @@ jobs:
  - name: Run test
  run: |
  cargo test --no-default-features
  +
  + optional_approx:
  + name: Optional features
  + runs-on: ubuntu-18.04
  + steps:
  + - name: Checkout repository
  + uses: actions/checkout@v2
  + - name: Install rust
  + uses: actions-rs/toolchain@v1
  + with:
  + toolchain: nightly
  + override: true
  + profile: minimal
  + - name: Run test
  + run: |
  + cargo test --features approx
  