v0.6.0

What's Changed

• Fix and optimize SVG merge functions for nested elements by @kyamagu in #129
• Add optimization to merge consecutive sibling tspan elements by @kyamagu in #130
• Add append_css() API for custom CSS injection by @kyamagu in #131
• Refactor: Move font-related SVG utilities to svg_utils module by @kyamagu in #132
• Add support for kerning, tsume, and ligatures in text layers by @kyamagu in #133

Full Changelog: v0.5.0...v0.6.0