12.0.0

• Changed: at-rule-empty-line-before now uses the blockless-after-same-name-blockless except option, rather than the blockless-group one.
• Added: block-closing-brace-empty-line-before rule.
• Added: comment-no-empty rule.
• Added: custom-property-empty-line-before rule.
• Added: declaration-empty-line-before rule.
• Added: media-feature-name-case rule.
• Added: rule-nested-empty-line-before rule.