* Allow access to more formula attributes in SetCellFormula
Make SetCellFormula variadic to not break API.
The new arguments are option arguments in which the type of
the formula and the ref attribute may be set.
These need to be set for an array formula to work.
* Add TestWriteArrayFormula to test optional parameters of SetCellFormula
TestWriteArrayFormula writes a document to the test directory that
contains array formulas that are used to calculate standard deviations.
The file also contains values calculated by the Go testcase, so the
results can be verified. It should be tested, if the array formula
works (i.e. shows a number, not an error) and that the values calculated
by the formula and those calculated by Go are the same.
workBookRelsWriter, drawingRelsWriter into relsWriter;
drawingRelsReader, workbookRelsReader, workSheetRelsReader into relsReader;
addDrawingRelationships, addSheetRelationships into addRels
SheetID only seems to indicate the file name for the sheet.
Check the sheets list based on index instead. Reordering sheets
in Excel changes the order they appear in that list.
Fixes#457
Instead of re-encoding the full sheet to change the namespaces
in the encoded bytes, read the sheet again and do the byte
replacements there.
In this case, file access ends up being more performant than
marshaling the sheet back to XML.
In the SharedStrings test, ensure the strings are actually read.
Fix#439
We were parsing the whole sheet twice since the
sheet reader already reads in all the rows.
getTotalRowsCols function is unused after these changes
so it has been deleted as well.
Closes#439