Stellium v0.18.1: Misc fixes

[0.18.1] - 2026-05-03

Added

• Cookbook file for essential/accidental dignities, scoring, peregrine, mutual reception, dispositor graphs: examples/dignities_cookbook.py

Changed

Fixed

• Added .with_aspects() method call for ChartBuilder examples in readme so aspects are properly calculated and drawn.
• Transit timeline strftime on Windows — %-d (strip leading zero) is a Unix-only format code that raises ValueError on Windows. Replaced with f"{d.day}" for cross-platform date formatting in TransitListSection.
• preset_detailed() moon phase / chart shape overlap — the auto-hide logic that suppresses the chart shape label when the moon phase occupies the bottom-right corner was not triggering when moon phase position was set to None (auto-detect). Since None resolves to the config default of "bottom-right", the check now treats None equivalently, correctly hiding the chart shape to prevent overlap.