Move Travis checks to GitHub actions

Author: BramBonne

.github/workflows/ci.yaml

@@ -3,16 +3,46 @@ name: Continuous integration
 on: [push, pull_request]
 
 jobs:
-  run-tests:
-    name: Run tests
-    runs-on: ubuntu-latest
+  ci:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os:
+          - ubuntu-latest
+          - macOS-latest
+        toolchain:
+          - stable
+          - beta
+          - nightly
+        target:
+          - arm-linux-androideabi
+          - armv7-linux-androideabi
+          - aarch64-linux-android
+          - i686-linux-android
+
     steps:
       - uses: actions/checkout@v2
-      - uses: actions-rs/toolchain@v1
+
+      - name: Install Rust ${{ matrix.toolchain }}
+        uses: actions-rs/toolchain@v1
         with:
           profile: minimal
-          toolchain: stable
-          override: true
-      - uses: actions-rs/cargo@v1
+          toolchain: ${{ matrix.toolchain }}
+          target: ${{ matrix.target }}
+
+      - name: Cargo check
+        uses: actions-rs/cargo@v1
+        with:
+          command: check
+          args: --target ${{ matrix.target }}
+
+      - name: Generate docs
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+
+      - name: Run tests
+        uses: actions-rs/cargo@v1
         with:
-          command: test
+          command: test
+          args: --target ${{ matrix.target }}