v1.21.1

Fixes

• Ensure fallback rules for logical properties are before nested rules – e66d99c
• Fix Safari compat data for ::marker pseudo element – cff779d
• Add compat data for ::part pseudo element – fbf0d24
• Avoid splitting and vendor prefixing :is() when we can safely unwrap it – 8d94ea1
• Ensure split incompatible rules get the correct vendor prefix – d6e1295
• Add semicolon after declarations if preserving nesting – acde78b
• Preserve license comments at the start of a stylesheet – 5cec8be
• Do not crash on currentColor in color-mix() or relative color syntax – 20c9612
• Specify exact version of lightningcss-derive in Rust crate – 1203368