Create periodic.yml

.github/workflows/periodic.yml

@@ -0,0 +1,25 @@
+name: Periodic
+
+on:
+  schedule:
+  - cron: 0 0 * * SUN
+
+jobs:
+  build:
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        rust: [stable, beta, nightly]
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+    - name: Setup Rust
+      uses: hecrj/setup-rust-action@v1
+      with:
+        rust-version: ${{ matrix.rust }}
+    - name: Checkout
+      uses: actions/checkout@v1
+    - name: Run tests
+      run: cargo test