Add CI configuration

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+- package-ecosystem: cargo
+  directory: "/"
+  schedule:
+    interval: weekly
+    time: "13:00"
+  open-pull-requests-limit: 99

.github/workflows/rust.yml

@@ -0,0 +1,62 @@
+name: CI
+
+on:
+  push:
+    branches: ['main']
+  pull_request:
+
+jobs:
+  test:
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+        rust: [stable, beta]
+        exclude:
+          - os: macos-latest
+            rust: beta
+          - os: windows-latest
+            rust: beta
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - uses: actions-rs/cargo@v1
+        with:
+          command: build
+          args: --all-features --all-targets
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --all-features
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: stable
+          override: true
+          components: rustfmt, clippy
+      - uses: actions-rs/cargo@v1
+        with:
+          command: fmt
+          args: --all -- --check
+      - uses: actions-rs/cargo@v1
+        if: always()
+        with:
+          command: clippy
+          args: --workspace --all-targets --all-features -- -D warnings
+
+  audit:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: EmbarkStudios/cargo-deny-action@v1

deny.toml

@@ -0,0 +1,3 @@
+[licenses]
+allow-osi-fsf-free = "either"
+copyleft = "deny"