Add Github Actions CI configuration

Author: Thomas Bahn

.github/workflows/ci.yml

@@ -0,0 +1,46 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+
+jobs:
+  test:
+    name: Test with Rust ${{ matrix.rust }}
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        rust: [1.33.0, stable, beta, nightly]
+    steps:
+      - uses: actions/checkout@v2
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: ${{ matrix.rust }}
+      - run: cargo test --verbose --all-features
+      - run: cargo test --verbose --no-default-features
+
+  clippy:
+    name: Lint with Clippy
+    runs-on: ubuntu-latest
+    env:
+      RUSTFLAGS: -Dwarnings
+    steps:
+      - uses: actions/checkout@v2
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          components: clippy
+      - run: cargo clippy --all-targets --verbose --no-default-features
+      - run: cargo clippy --all-targets --verbose --all-features
+
+  test-minimal:
+    name: Test minimal dependency version with Rust nightly
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: hecrj/setup-rust-action@v1
+        with:
+          rust-version: nightly
+      - run: cargo test -Zminimal-versions --verbose --all-features