Add actions.

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: [push]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [macos-latest, ubuntu-24.04]
+        compiler: [4.14.2, 5.2.0]
+    steps:
+    - name: Build and test module
+      uses: savonet/build-and-test-ocaml-module@main
+      with:
+        ocaml-compiler: ${{ matrix.compiler }}

.github/workflows/doc.yml

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+name: Doc build
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build_doc:
+    runs-on: ubuntu-24.04
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v1
+    - name: Setup OCaml
+      uses: toots/setup-ocaml@master
+      with:
+        ocaml-compiler: 4.14.x
+    - name: Pin locally
+      run: opam pin -y add --no-action .
+    - name: Install locally
+      run: opam install -y --with-doc .
+    - name: Build doc
+      run: opam exec dune build @doc
+    - name: Deploy doc
+      uses: JamesIves/[email protected]
+      with:
+        branch: gh-pages
+        folder: _build/default/_doc/_html