Text frames now say when a word is too wide for them, instead of leaving it out.
validate() reports it under text_overflow. In a chain of frames the word moves on
to the next frame instead of being lost; the last frame warns when none has room for it.validate() before an order now also gets a
text_overflow finding for a frame whose word is wider than the frame.0a6876a (from ed578b3): canvas #221 (TYP-1171), nothing else in the range.linalyze() inserted a word only when it fit the rest of the line, and a word wider
than an empty line fit nowhere, so it was dropped and the height test measured what was left.
It now records the first such word (Editor.unplaced); has_overflow(), the chain cut and the
editor's overflow alert read it. A lone frame's layout is unchanged.