ci: convert to GitHub Actions, update links

.editorconfig

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+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_size = 4
+trim_trailing_whitespace = true
+
+[*.js]
+indent_style = space

.eslintignore

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+dist/*
+node_modules/*

.eslintrc.js

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+module.exports = {
+    extends: ['scratch', 'scratch/node', 'scratch/es6']
+};

.github/workflows/ci-cd.yml

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+name: CI/CD
+
+on:
+  workflow_dispatch: # Allows you to run this workflow manually from the Actions tab
+  pull_request: # Runs whenever a pull request is created or updated
+  push: # Runs whenever a commit is pushed to the repository
+    branches: [master, hotfix/*] # ...on any of these branches
+
+concurrency:
+  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
+  cancel-in-progress: true
+
+permissions:
+  contents: write # publish a GitHub release
+  pages: write # deploy to GitHub Pages
+  issues: write # comment on released issues
+  pull-requests: write # comment on released pull requests
+
+jobs:
+  ci-cd:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: wagoid/commitlint-github-action@v5
+        if: github.event_name == 'pull_request'
+      - uses: actions/setup-node@v3
+        with:
+          cache: 'npm'
+          node-version-file: '.nvmrc'
+      - name: Info
+        run: |
+          cat <<EOF
+          Node version: $(node --version)
+          NPM version: $(npm --version)
+          GitHub ref: ${{ github.ref }}
+          GitHub head ref: ${{ github.head_ref }}
+          EOF
+      - name: Setup
+        run: npm ci
+      - name: Lint
+        run: npm run lint
+      - name: Build
+        run: npm run build
+      - name: Release
+        env:
+          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: npx --no -- semantic-release

.husky/.gitattributes

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+* text eol=lf

.husky/commit-msg

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+#!/usr/bin/env sh
+. "$(dirname -- "$0")/_/husky.sh"
+
+npx --no-install commitlint --edit "$1"

.nvmrc

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+v16

README.md

@@ -1,4 +1,22 @@
 # scratch-render-fonts
+
 Fonts for Scratch SVG rendering
 
-[![CircleCI](https://circleci.com/gh/LLK/scratch-render-fonts/tree/master.svg?style=shield&circle-token=786988d80057cc1ac25c39fb4f5754d736106fa7)](https://circleci.com/gh/LLK/scratch-render-fonts?branch=master)
+[![CI/CD](https://github.com/scratchfoundation/scratch-render-fonts/actions/workflows/ci-cd.yml/badge.svg)](https://github.com/scratchfoundation/scratch-render-fonts/actions/workflows/ci-cd.yml)
+
+## Committing
+
+This project uses [semantic release](https://github.com/semantic-release/semantic-release) to ensure version bumps
+follow semver so that projects depending on it don't break unexpectedly.
+
+In order to automatically determine version updates, semantic release expects commit messages to follow the
+[conventional-changelog](https://github.com/bcoe/conventional-changelog-standard/blob/master/convention.md)
+specification.
+
+Use the [commitizen CLI](https://github.com/commitizen/cz-cli) to make commits formatted in this way:
+
+```bash
+npm install -g commitizen
+```
+
+Now you're ready to make commits using `git cz`.

commitlint.config.js

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+module.exports = {
+    extends: ['@commitlint/config-conventional'],
+    ignores: [message => message.startsWith('chore(release):')]
+};