Add github actions.

.github/dependabot.yml

@@ -0,0 +1,8 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions" # Necessary to update action hashs.
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    # Allow up to 3 opened pull requests for github-actions versions.
+    open-pull-requests-limit: 3

.github/workflows/publish.yml

@@ -0,0 +1,28 @@
+# Zero-Clause BSD License
+
+# Copyright (C) 2024 Toitware ApS.
+
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted.
+
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+name: Publish package
+on:
+  push:
+    tags:
+    - 'v[0-9]+.[0-9]+.[0-9]+'
+    - 'v[0-9]+.[0-9]+.[0-9]+-*'
+jobs:
+  create-release:
+    name: Create new release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Publish
+        uses: toitlang/[email protected]