Release history and notable changes

First versioned release of the rebuilt london5.com site.

• Home — new hero, animated product window, and a "night of work" overview.
• Download — per-platform cards (macOS available; other platforms planned).
• Changelog — this page now tracks every site release.
• Brand & status — Londron orb animation and build-status badges.
• Pipelines — nightly build status and changelog generation helpers.