md2png 0.2.0

Added

• Add silent update discovery in About using public GitHub latest-release
  metadata, a 24-hour successful-result cache, a 60-second manual cooldown, and
  persisted server rate-limit handling. A newer version downloads only after
  explicit confirmation; the app verifies the versioned Apple silicon DMG's
  size and SHA-256 digest before asking macOS to open it for manual installation.
  Verified downloads can be reopened or revealed in Finder for cleanup.

Changed

• Replace the About window's manual Releases link with compact up-to-date or
  available-version status and inline actions. Automatic checking is silent;
  download progress stays in About and the status item, and Releases is a
  failure fallback.
• Give explicit update checks inline progress and recent-completion feedback
  without adding a dialog or changing the displayed release result.

md2png 0.1.0

Added

• Add a native Apple silicon macOS menu bar app that renders clipboard Markdown
  locally into Retina PNG and TIFF clipboard content.
• Support standard Markdown, GFM-style tables and checklists, syntax-highlighted
  fenced code, and bundled Mermaid flowcharts, sequence diagrams, and Gantt
  timelines.
• Add global shortcuts for rendering and showing the latest successful render,
  plus a compact clipboard preview and non-activating confirmation HUD.
• Add an in-memory Last Render preview with correct centering, tall-image
  scrolling, image dimensions, and standard Command-W behavior.
• Add bundled short, long, formatting, code, checklist, table, flowchart,
  sequence, and Gantt examples that render immediately when selected.
• Add English and Simplified Chinese localization, a structured About window,
  release notes, build diagnostics, and optional project and Releases links.
• Add offline rendering safeguards, including raw HTML sanitization, blocked
  external images, clipboard preservation on failure, and no automatic paste,
  upload, or send behavior.
• Add arm64 build, DMG, Developer ID signing, notarization, and configurable
  GitHub Release publishing workflows.