👷 Add ci (#22)

* 🚧 first try

* 🐛 fix url to download sscache

* 🔥 simplify ci

Author: davidB

.github/workflows/ci.yml

@@ -0,0 +1,37 @@
+---
+name: ci
+
+on:
+  push:
+  workflow_dispatch:
+
+jobs:
+  tests:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        rust: [stable]
+    env:
+      CARGO_TERM_COLOR: always
+      RUST_BACKTRACE: full
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Rust ${{ matrix.rust }}
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: ${{ matrix.rust }}
+          profile: minimal
+          override: true
+      - name: Cache cargo registry
+        uses: actions/cache@v2
+        continue-on-error: false
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-
+      - run: cargo test --all-features