Shared strings now use new array (not file) based approach
Added function to dump in memory arrays
First part of extracting named references using arrays
Now replace named references using arrays
Fix typo $stderr not @stderr
Working my way through the extract methods to use in memory arrays
More work on eliminating the writing too and from files
Extracting array formulae
Now worked through changes to table extraction
Now rewrites whole row and column references
Updated the rewriting of shared formulae
Updated the named reference replacement
Updated table reference replacement
Updated the simplifying arithmetic
Updated replacing ranges with array literals
Updated array formulae expansion
Updated array formula replacement
Updated combining of the formulae into single hash
Updated replacing arithmetic on ranges
Updated replace_arrays_with_single_cells_replacer