A country's name is fitted to the shape of its holding without ever
squashing the letters, so a large holding with a short name ran out of
kerning before it filled the space.
- Raised MAX_KERNING from 2 to 5, letting the run open up further across
broad holdings.
- Noted at the top of the file that these figures are meant to be tuned by
hand and must not change how the tests behave.
adrien
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