A StreamTransformer that splits a String into individual lines.
A line is terminated by either a CR (U+000D), a LF (U+000A), a CR+LF sequence (DOS line ending), and a final non-empty line can be ended by the end of the string.
The returned lines do not contain the line terminators.
stream
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StreamTransformer<RS, RT>
view of this stream transformer. [...]