add ci

Signed-off-by: Yoshua Wuyts <yoshuawuyts@gmail.com>

.github/workflows/ci.yaml

@@ -0,0 +1,74 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - staging
+      - trying
+
+env:
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  build_and_test:
+    name: Build and test
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+        rust: [nightly]
+
+    steps:
+    - uses: actions/checkout@master
+
+    - name: Install ${{ matrix.rust }}
+      uses: actions-rs/toolchain@v1
+      with:
+        toolchain: ${{ matrix.rust }}
+        override: true
+
+    - name: check
+      uses: actions-rs/cargo@v1
+      with:
+        command: check
+        args: --all --bins --examples
+
+    - name: check unstable
+      uses: actions-rs/cargo@v1
+      with:
+        command:  check
+        args: --all --benches --bins --examples --tests
+
+    - name: tests
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+        args: --all
+
+  check_fmt_and_docs:
+    name: Checking fmt and docs
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@master
+
+    - id: component
+      uses: actions-rs/components-nightly@v1
+      with:
+        component: rustfmt
+
+    - uses: actions-rs/toolchain@v1
+      with:
+          toolchain: ${{ steps.component.outputs.toolchain }}
+          override: true
+
+    - name: setup
+      run: |
+        rustup component add rustfmt
+        rustc --version
+
+    - name: fmt
+      run: cargo fmt --all -- --check
+
+    - name: Docs
+      run: cargo doc