Add changesets and automated release workflow

.changeset/README.md

@@ -0,0 +1,8 @@
+# Changesets
+
+Hello and welcome! This folder has been automatically generated by `@changesets/cli`, a build tool that works
+with multi-package repos, or single-package repos to help you version and publish your code. You can
+find the full documentation for it [in our repository](https://github.com/changesets/changesets)
+
+We have a quick list of common questions to get you started engaging with this project in
+[our documentation](https://github.com/changesets/changesets/blob/master/docs/common-questions.md)

.changeset/config.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "https://unpkg.com/@changesets/config@1.4.0/schema.json",
+  "changelog": [
+    "@changesets/changelog-github",
+    { "repo": "jaredpalmer/cypress-image-snapshot" }
+  ],
+  "commit": false,
+  "linked": [],
+  "access": "public",
+  "baseBranch": "master",
+  "updateInternalDependencies": "patch",
+  "ignore": []
+}

.github/workflows/release.yml

@@ -0,0 +1,30 @@
+name: Release
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    if: github.repository == 'jaredpalmer/cypress-image-snapshot'
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Use Node.js 12.x
+        uses: actions/setup-node@v1
+        with:
+          version: 12.x
+
+      - name: Install deps and build (with cache)
+        uses: bahmutov/npm-install@v1
+
+      - name: Create Release Pull Request or Publish to npm
+        uses: changesets/action@master
+        with:
+          publish: yarn release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}

package.json

@@ -16,7 +16,9 @@
     "build": "babel src --out-dir .",
     "test": "jest",
     "lint": "eslint src",
-    "prepublish": "npm run build"
+    "prepublish": "npm run build",
+    "changeset": "changeset",
+    "release": "changeset publish"
   },
   "dependencies": {
     "chalk": "^2.4.1",
@@ -27,6 +29,8 @@
     "term-img": "^4.0.0"
   },
   "devDependencies": {
+    "@changesets/changelog-github": "^0.2.8",
+    "@changesets/cli": "^2.13.1",
     "babel-cli": "^6.26.0",
     "babel-plugin-transform-object-rest-spread": "^6.26.0",
     "babel-preset-env": "^1.7.0",