12.0.0

• Removed: ignoring bower_components folder by default (#4384).
• Removed: createRuleTester API (#4385).
• Added: more information for custom formatters (#4393).
• Fixed: comment-empty-line-before false positives for selector lists and shared-line comments (#4360).
• Fixed: font-family-no-missing-generic-family-keyword false positives for Sass-variables with namespaces (#4378).
• Fixed: font-weight-notation false positives for font-weight ranges in @font-face (#4372).
• Fixed: length-zero-no-unit false positives for line-height, and for fr units (#4394).
• Fixed: length-zero-no-unit false positives for Less variables (#4405).
• Fixed: selector-max-* false negatives for rules with nested rules (#4357).
• Fixed: incorrect error message when parsing files with a broken syntax (#4364).