[rteoo]

Summary

• Add an editable time-series SVG icon using the Homepy tile, palette, and rounded strokes.
• Refresh the README with a centered icon, badges, and feature highlights; use an absolute asset URL for PyPI rendering.
• Prepare v2.3.0 as requested, with an explicit migration table and release notes for the registry-key changes already on main.

Testing

• Offline suite: 148 passed, 9 integration tests deselected, 9 subtests passed.
• Source distribution and wheel build passed; both passed twine metadata checks.
• SVG XML and self-contained structure validated.

Risks

• v2.3.0 includes the seven breaking registry-name corrections already merged to main. Removed keys require migration; numeric SGS codes and fetch behavior remain unchanged.