Simple Notch 0.2.0

Added

• Seven-day trial and in-app Polar license activation, with device-only
  Keychain storage, support for up to three Macs, periodic validation, and a
  seven-day offline allowance.
• A Polar-powered storefront for one-time and yearly plans, including secure
  post-checkout license-key delivery, download links, and activation guidance.
• Legal notice, privacy policy, and software license terms for the storefront.

Changed

• Now Playing marquee text uses Core Animation layers for smoother, more
  reliable continuous scrolling.