Use Release Drafter to draft releases

.github/labels.yml

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+# Default GitHub labels
+- color: d73a4a
+  description: "Something isn't working"
+  name: bug
+- color: cfd3d7
+  description: "This issue or pull request already exists"
+  name: duplicate
+- color: a2eeef
+  description: "New feature or request"
+  name: enhancement
+- color: 7057ff
+  description: "Good for newcomers"
+  name: good first issue
+- color: 008672
+  description: "Extra attention is needed"
+  name: help wanted
+- color: e4e669
+  description: "This doesn't seem right"
+  name: invalid
+- color: d876e3
+  description: "Further information is requested"
+  name: question
+- color: ffffff
+  description: "This will not be worked on"
+  name: wontfix
+
+# Keep a Changelog labels
+# https://keepachangelog.com/en/1.0.0/
+- color: 0e8a16
+  description: "For new features"
+  name: "changelog: Added"
+- color: af99e5
+  description: "For changes in existing functionality"
+  name: "changelog: Changed"
+- color: FFA500
+  description: "For soon-to-be removed features"
+  name: "changelog: Deprecated"
+- color: 00A800
+  description: "For any bug fixes"
+  name: "changelog: Fixed"
+- color: ff0000
+  description: "For now removed features"
+  name: "changelog: Removed"
+- color: 045aa0
+  description: "In case of vulnerabilities"
+  name: "changelog: Security"
+- color: fbca04
+  description: "Exclude PR from release draft"
+  name: "changelog: skip"
+
+# Other labels
+- color: fbca04
+  description: "Unit tests, linting, CI, etc."
+  name: testing
+- color: FFD43B
+  description: ""
+  name: Python 2
+- color: F25022
+  description: ""
+  name: Windows
+- color: e28acf
+  description: ""
+  name: documentation
+- color: caffaf
+  description: ""
+  name: release

.github/release-drafter.yml

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+name-template: "$NEXT_PATCH_VERSION"
+tag-template: "$NEXT_PATCH_VERSION"
+
+categories:
+  - title: "Added"
+    labels:
+      - "changelog: Added"
+      - "enhancement"
+  - title: "Changed"
+    label: "changelog: Changed"
+  - title: "Deprecated"
+    label: "changelog: Deprecated"
+  - title: "Removed"
+    label: "changelog: Removed"
+  - title: "Fixed"
+    labels:
+      - "changelog: Fixed"
+      - "bug"
+  - title: "Security"
+    label: "changelog: Security"
+
+exclude-labels:
+  - "changelog: skip"
+
+template: |
+  ## Changes
+
+  $CHANGES

.github/workflows/labels.yml

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+name: Sync labels
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - .github/labels.yml
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: micnncim/action-label-syncer@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/release-drafter.yml

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+name: Release drafter
+
+on:
+  push:
+    # branches to consider in the event; optional, defaults to all
+    branches:
+      - master
+
+jobs:
+  update_release_draft:
+    if: github.repository == 'ultrajson/ultrajson'
+    runs-on: ubuntu-latest
+    steps:
+      # Drafts your next release notes as pull requests are merged into "master"
+      - uses: release-drafter/release-drafter@v5
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}