Add CD via Github Actions

.github/workflows/build.yaml

@@ -0,0 +1,61 @@
+name: Build
+on:
+  push:
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: 
+          - windows-latest
+          - ubuntu-latest
+          - macos-latest
+      fail-fast: true
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          default: true
+      - name: (Windows) Enable static CRT linkage # https://stackoverflow.com/a/44387312/7653274
+        if: matrix.os == 'windows-latest'
+        run: |
+          mkdir .cargo
+          echo '[target.x86_64-pc-windows-msvc]' >> .cargo/config
+          echo 'rustflags = ["-Ctarget-feature=+crt-static"]' >> .cargo/config
+      - name: (Linux) Install libxcb-composite
+        if: matrix.os == 'ubuntu-latest'
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libxcb-composite0-dev
+      - name: Build binary
+        run: |
+          cargo build --verbose --release
+        env:
+          MACOSX_DEPLOYMENT_TARGET: 10.14
+      - name: (Linux/MacOS) Strip binary
+        if: matrix.os != 'windows-latest'
+        run: strip target/release/stevenarella
+      - name: Move binary
+        run: |
+          if [[ ${{ matrix.os }} == windows ]]; then
+            mv target/release/stevenarella.exe stevenarella-${{ matrix.os }}.exe
+          else
+            mv target/release/stevenarella stevenarella-${{ matrix.os }}
+          fi
+        shell: bash
+      - name: Upload binary
+        uses: actions/upload-artifact@v2
+        with:
+          name: stevenarella-${{ matrix.os }}
+          path: stevenarella*
+      - name: Release binary
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            stevenarella*
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}