- Added parallel test execution with a new `--parallel` flag, auto load‑balancing across VMs and support for grouping runs via `--group`.
- Introduced `--ci-build-id` flag and enhanced the Dashboard to show grouped runs, spec duration estimates, and richer visual run information.
- Implemented numerous bug fixes (Electron hanging, SVG clicks, illegal invocation, form submission, visual alignment, race conditions) and improvements (browserify 1.1.0, per‑run browser profiles, API retry backoff).