Optimisations

	default	advanced
autoprefixer	❌	✅
cssDeclarationSorter	✅	✅
rawCache	✅	✅
calc	✅	✅
colormin	✅	✅
convertValues	✅	✅
discardComments	✅	✅
discardDuplicates	✅	✅
discardEmpty	✅	✅
discardOverridden	✅	✅
discardUnused	❌	✅
mergeIdents	❌	✅
mergeLonghand	✅	✅
mergeRules	✅	✅
minifyFontValues	✅	✅
minifyGradients	✅	✅
minifyParams	✅	✅
minifySelectors	✅	✅
normalizeCharset	✅	✅
normalizeDisplayValues	✅	✅
normalizePositions	✅	✅
normalizeRepeatStyle	✅	✅
normalizeString	✅	✅
normalizeTimingFunctions	✅	✅
normalizeUnicode	✅	✅
normalizeUrl	✅	✅
normalizeWhitespace	✅	✅
orderedValues	✅	✅
reduceIdents	❌	✅
reduceInitial	✅	✅
reduceTransforms	✅	✅
svgo	✅	✅
uniqueSelectors	✅	✅
zindex	❌	✅