ci(release): setup release-please

Setup release-please to handle version bumping, changelog generation,
and creating releases on GitHub.

.github/workflows/release-please.yml

@@ -0,0 +1,16 @@
+---
+on: push
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'
+    outputs:
+      release_created: ${{ steps.release-please.outputs.release_created }}
+      tag_name: ${{ steps.release-please.outputs.tag_name }} # e.g. v1.0.0
+      version: ${{ steps.release-please.outputs.version }} # e.g. 1.0.0
+    steps:
+      - uses: google-github-actions/release-please-action@v3
+        id: release-please
+        with:
+          command: manifest

.release-please-manifest.json

@@ -0,0 +1,3 @@
+{
+  ".": "0.1.1"
+}

release-please-config.json

@@ -0,0 +1,18 @@
+{
+  "bootstrap-sha": "e3fdaa7f673a8b8d43c2ac16f8a3cdfe8b3ab6c1",
+  "last-release-sha": "e3fdaa7f673a8b8d43c2ac16f8a3cdfe8b3ab6c1",
+  "packages": {
+    ".": {
+      "release-type": "simple",
+      "changelog-path": "CHANGELOG.md",
+      "bump-minor-pre-major": true,
+      "bump-patch-for-minor-pre-major": true,
+      "draft": false,
+      "prerelease": false,
+      "extra-files": [
+        "yank-indent.el"
+      ]
+    }
+  },
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
+}

yank-indent.el

@@ -3,8 +3,10 @@
 ;; Author: Jim Myhrberg <contact@jimeh.me>
 ;; URL: https://github.com/jimeh/yank-indent
 ;; Keywords: convenience, yank, indent
-;; Version: 0.1.0
 ;; Package-Requires: ((emacs "25.1"))
+;; x-release-please-start-version
+;; Version: 0.1.0
+;; x-release-please-end
 
 ;; This file is not part of GNU Emacs.