• [bug] Invest why got the different value of CultureInfo if placing it as key of the dictionary. #1492
• [bug][code quality] Implement IDeepCloneable<T> for some hit-object for better copy experience. #1482
• [code quality] There's no need to override CreateSelections in the EditModeSection #1477
• [code quality] Reduce duplicated override in the EditModeSection #1469
• [code quality] Languages should be rename to language in the lyric editor #1468