CoreText iOS 11.4 to 12.0 API Differences

CoreText.h
Added #def kCTVersionNumber10_14
CTFontCollection.h
Added CTFontCollectionCreateMatchingFontDescriptorsWithOptions()
CTFramesetter.h
Added CTFramesetterCreateWithTypesetter()
CTTypesetter.h
Added kCTTypesetterOptionAllowUnboundedLayout
Modified CTTypesetterCreateWithAttributedStringAndOptions()
Declaration
FromCTTypesetterRef _Nonnull CTTypesetterCreateWithAttributedStringAndOptions(CFAttributedStringRef _Nonnull string, CFDictionaryRef _Nullable options)
ToCTTypesetterRef _Nullable CTTypesetterCreateWithAttributedStringAndOptions(CFAttributedStringRef _Nonnull string, CFDictionaryRef _Nullable options)