line wrap were appended, also appendOutput and appendOutputInline ended
up doing almost the same thing. It might be that appendOutput is called
in some places where appendOutputInline would be more adequate. The code
now tries to called QPlainTextEdit::appendPlainText() whenever it can
because of its update optimizations when it comes to enforcing maximum
block count. We want application output to be processed fast, even if
the maximum block count was reached!