Redo Linux/Mac CI with github actions

.github/workflows/ci.yml

@@ -0,0 +1,65 @@
+on: 
+  push:
+    branches:
+      - main
+  pull_request:
+
+name: Continuous integration
+
+jobs:
+  test:
+    name: Test suite
+    strategy:
+      matrix:
+        rust:
+          - 1.32.0
+          - stable
+          - beta
+          - nightly
+        os:
+          - macos-latest
+          - ubuntu-latest
+        arch:
+          - i686
+          - x86_64
+    env:
+      ARCH: ${{ matrix.arch }}
+    runs-on: ${{ matrix.os }}
+    steps:
+      - uses: actions/checkout@v2.3.4
+      - uses: actions-rs/toolchain@v1.0.7
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+          components: clippy, rustfmt
+      - uses: Swatinem/rust-cache@v1
+      - name: Check formatting
+      - name: Install cargo-binstall
+        run: |
+          curl --location --remote-name https://github.com/ryankurte/cargo-binstall/releases/download/v0.11.1/cargo-binstall-x86_64-unknown-linux-musl.tgz
+          tar -zxvf cargo-binstall-x86_64-unknown-linux-musl.tgz
+          mv cargo-binstall ~/.cargo/bin
+          ls -l ~/.cargo/bin
+      - name: Install "build all features"
+        uses: actions-rs/cargo@v1.0.3
+        with:
+          command: binstall
+          args: cargo-all-features --no-confirm --version 1.7.0
+      - name: Build all features
+        uses: actions-rs/cargo@v1.0.3
+        with:
+          command: build-all-features
+      - name: Test all features
+        uses: actions-rs/cargo@v1.0.3
+        with:
+          command: test-all-features
+        env:
+          RUST_LOG: debug
+      - name: bench
+        uses: actions-rs/cargo@v1.0.3
+        with:
+          command: bench
+        env:
+          RUST_LOG: debug
+          COUNTS: 0,10,1000,100000,10000000