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- A few days back I've got this idea regarding recalculus of width. Now it calculates step by step. So 1 loop over all data was removed. All though there's full recalculation in case of `header_on_border` 😞 (can be fixed..... but I decided to be short) In perfect world it also shall be refactored ...... - Also have done small refactoring to switch build table from `Vec<Vec<_>>>` to table itself. To hide internals (kind of still there's things which I don't like). It touched the `--expand` algorithm lightly you can see the tests changes. - And when doing that noticed one more opportunity, to remove HashMap usage and directly use `tabled::ColoredConfig`. Which reduces copy operations and allocations. - And fixed a small issue where trailing column being using deleted column styles.  To conclude optimizations; I did small testing and it's not slower. But I didn't get the faster results either. But I believe it must be faster well in all cases, I think maybe bigger tables must be tested. Maybe someone could have a few runs to compare performance. cc: @fdncred