Reduce technical debt

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+name: CI
+on:
+  pull_request:
+  push:
+jobs:
+  test:
+    name: Test
+    strategy:
+      matrix:
+        os: ["ubuntu-latest", "windows-latest", "macos-latest"]
+        rust: ["stable"]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+    - name: Install Rust
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        profile: minimal
+        override: true
+    - uses: Swatinem/rust-cache@v1
+    - name: Build
+      run: cargo test --no-run
+    - name: Test
+      run: cargo test