v2.26.0

The number-format display path was mangling several common codes, and three
chart types, table totals and outline placement were missing.

Fixed

• Square brackets in a format code corrupted the result. They were not
  handled at all, and the failure was not graceful: [Red]0.00 came out as
  [Re31]0.00, because the d in the colour name sent the whole code to the
  date formatter, and [$$-409]#,##0.00 had the 409 read as digit
  placeholders. Now a colour is dropped, a currency tag keeps its symbol and
  drops its locale id, a condition such as [>100] selects the section, and
  an elapsed token is passed to the date formatter.
• Fraction formats did nothing. # ?/? on a third gave 0 /. The
  denominator is now chosen to fit the placeholders, or taken as written for a
  fixed scale such as ?/8, and ? reserves a blank so a column of fractions
  lines up on the slash.
• Elapsed durations printed their brackets. [h]:mm on a day and a half
  read [12]:00 instead of 36:00. [h], [m] and [s] now measure the
  whole duration rather than wrapping at the clock field, and the mm after
  an elapsed hour reads as minutes rather than as a month.
• A fractional-seconds group always printed zero. mm:ss.0 on one and a
  half seconds gave 00:01.0. The whole seconds also truncate now, so the two
  halves cannot disagree by a rounding.
• A negative too small to show kept its sign, so a value that is simply
  zero at the format's precision displayed as -0.00.
• _ and * were printed literally. _) reserves the width of a
  character and *- fills the column, which every built-in accounting format
  uses, so those formats showed stray markers.
• A section of pure literals had a 0 put in front of it, so the zero
  section of 0.00;-0.00;"zero" read 0zero.
• The fourth (text) section never ran. A custom code was rejected on a
  text cell before it could, so a format whose job was to label or wrap text
  did nothing. 0.00;-0.00;"zero";"["@"]" now shows hi as [hi].
• A new workbook declared its group summaries above and to the left. The
  bundled template carried <outlinePr summaryBelow="0" summaryRight="0"/>,
  the opposite of Excel's default, so the outline arrows on a grouped sheet
  pointed at the wrong row. A created workbook now starts on the default.

New

• Three more chart types. Chart.bubble (an XY scatter where each point
  carries a size, via ChartSeries.bubbleSizes), Chart.stock (high-low-close
  or open-high-low-close, by series order), and Chart.ofPie (a pie with its
  small slices broken out into a second pie or a bar, by OfPieSplit). All
  three read back as themselves.
• ChartSeriesStyle gives a series a fill and a stroke, with a width in
  points and a dash pattern, so a dashed or outline-only series is expressible
  rather than just a single colour.
• A table totals row. ExcelTable.totals says what each column shows: a
  label, or one of nine aggregates. Each is written as a SUBTOTAL over the
  column, so a filtered-out row drops out of it as it does in Excel.
• Sheet.appendTableRow, Sheet.tableRowsAsMaps and Sheet.table.
  Appending to a table has to grow the table's range too, or the new row sits
  outside its banding and its filter; reading one back by column name is the
  other half of that.
• Sheet.outlineSettings places a group's summary row and column, and can
  hide the outline symbols, for a sheet whose totals sit above or to the left
  of their detail.
• SUBTOTAL, with the 1-11 codes and the 101-111 variants that leave
  hidden rows out. That takes the engine to 332 function names.

Notes

A stock chart is fixed at three or four series by the schema, and Excel refuses
the file outright otherwise, so Chart.stock rejects anything else up front
rather than letting it become a repair prompt.