Setup ci

.github/workflows/main.yml

@@ -0,0 +1,32 @@
+name: Build
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  test:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        build: [stable, beta, nightly, macos]
+        include:
+          - build: stable
+            os: ubuntu-latest
+            rust: stable
+          - build: beta
+            os: ubuntu-latest
+            rust: beta
+          - build: nightly
+            os: ubuntu-latest
+            rust: nightly
+          - build: macos
+            os: macos-latest
+            rust: stable
+    steps:
+      - uses: actions/checkout@master
+      - name: Install rust
+        run: |
+          rustup update ${{ matrix.rust }} --no-self-update
+          rustup default ${{ matrix.rust }}
+      - run: cargo test --verbose