Allow automated publishing

Closes #36

Author: fregante

.github/workflows/npm-publish.yml

@@ -0,0 +1,39 @@
+env: {}
+
+# FILE GENERATED WITH: npx ghat fregante/ghatemplates/npm-publish
+# SOURCE: https://github.com/fregante/ghatemplates
+
+# Collaborators can publish a new version of what's on master via "workflow_dispatch"
+# https://github.blog/changelog/2020-07-06-github-actions-manual-triggers-with-workflow_dispatch/
+
+name: Publish
+
+on:
+  workflow_dispatch:
+    inputs:
+      Version:
+        description: 'Version accepted by `npm version *`'
+        required: true
+
+jobs:
+  NPM:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 20
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 14.x
+          registry-url: 'https://registry.npmjs.org'
+      - run: npm ci || npm install
+      - uses: fregante/setup-git-user@v1
+      - run: npm version ${{ github.event.inputs.Version }}
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+      - run: git push --follow-tags
+      - uses: fregante/release-with-changelog@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          exclude: true