Change history of write_xlsx rubygem.

2023-01-18 v1.09.5
    Fixed issue #92. Worksheet#write raises with Time instance token.

2022-09-02 v1.09.4
    Remove zip-zip dependency.

    Fix: Object#=~ is called on Integer; it always returns nil

2022-07-08 v1.09.3
    Fixed issue #47. Dealing with NAN

2022-02-14 v1.09.2
    Fixed issue #79. Worksheet#write calls the write_number
    when multi-line string has a line with only numbers.

2021-11-27 v1.09.1
    Added Worksheet#keep_leading_zeros method to handle '001' as string in
    Worksheet#write, write_row, and write_col method.

2021-11-26 v1.09.0

    Added support for background images in worksheets. See set_background().

    Added support for GIF image files (and in Excel 365, animated GIF files).

    Added support for pixel sizing in set_row() and set_column() via new
    functions called set_row_pixels() and set_column_pixels().

2021-11-19 v1.08.0

    Added ability to add accessibility options "description" and
    "decorative" to images via insert_image().

    Added the workbook read_only_recommended() method to set the Excel
    "Read-only Recommended" option that is available when saving a file.

    Added option to set a chart crossing to 'min' as well as the existing
    'max' option. The 'min' option isn't available in the Excel interface
    but can be enabled via VBA.

    Added option to unprotect ranges in protected worksheets.

    Added check, and warning, for worksheet tables with no data row.  Either
    with or without a header row.

    Added ignore_errors() worksheet method to ignore Excel worksheet
    errors/warnings in user defined ranges.

    Fixed issue where pattern formats without colours where given a default
    black fill colour.

    Fix issue where custom chart data labels didn't inherit the position for
    the data labels in the series.

    Fixed issue with relative url links in images.

    Fixed issue where headers/footers were restricted to 254 characters
    instead of 255.

2021-02-17 v1.07.0

   Added support for Border, Fill, Pattern and Gradient formatting to chart
   data labels and chart custom data labels.


2021-02-15 v1.06.0

   Fix for issue where array formulas weren't included in the output file
   for certain ranges/conditions.


2021-02-15 v1.05.0

   Added support for custom data labels in charts.

   Remove ruby-1.9.3 travil CI check.


2021-02-14 v1.04.0

   Added support for "stacked" and "percent_stacked" Line charts.

   Fix for worksheet objects (charts and images) that are inserted with an
   offset that starts in a hidden cell.

   Removed error in add_worksheet() for sheet name "History" which is a
   reserved name in English version of Excel. However, this is an allowed
   worksheet name in some Excel variants so the warning has been turned into
   a documentation note instead.


2021-02-13 v1.03.0

   Fix for duplicate images being copied to an Excel::Writer::XLSX
   file. Excel uses an optimization where it only stores one copy of a
   repeated/duplicate image in a workbook. WriteXLSX didn't do
   this which meant that the file size would increase when then was a large
   number of repeated images. This release fixes that issue and replicates
   Excel's behaviour.

2021-02-12 v1.02.0

   Added support for hyperlinks in worksheet images.

   Increased allowable url length from 255 to 2079 characters, as allowed in
   more recent versions of Excel.


2021-02-08 v1.01.0

   Added support for stacked and East Asian vertical chart fonts.

   Added option to control positioning of charts or images when cells are
   resized.

   Added support for combining Pie/Doughnut charts.

   Fixed sizing of cell comment boxes when they cross columns/rows that have
   size changes that occur after the comment is written. Comments should
   now behave like other worksheet objects such as images and charts.

   Fix for structured reference in chart ranges.

2021-01-23 v1.00.0

   Fixed issue where images that started in hidden rows/columns weren't placed
   correctly in the worksheet.


2021-01-08 v0.99.0

   Added font and font_size parameters to write_comment().

   Allow formulas in date field of data_validation().

   Added top_left chart legend position.

   Added legend formatting options.

   Added set_tab_ratio() method to set the ratio between the worksheet tabs
   and the horizontal slider.

   Added worksheet hide_row_col_headers() method to turn off worksheet row
   and column headings.

   Add functionality to align chart category axis labels.

   Fix for issue with special characters in worksheet table functions.

   Fix handling of 'num_format': '0' in duplicate formats.


2021-01-03 v0.98.0

   fixed for autofilter rule with blanks plus another filter.

2021-01-02 v0.97.0

   Added Excel 2010 data bar features such as solid fills and control over
   the display of negative values.

   Added default formatting for hyperlinks if none is specified. The format
   is the Excel hyperlink style so links change colour after they are
   clicked.

   Fixed missing plotarea formatting in pie/doughnut charts.

2020-12-31 v0.96.0

   Added icon sets to conditional formatting.

2020-12-30 v0.95.0

   Added workbook set_size() method.

2020-12-30 v0.94.0

   Added font support to chart tables.

2020-12-30 v0.93.0

   Added trendline properties: intercept, display_equation and
   display_r_squared.

2020-12-30 v0.92.0

   Fix for insert_image issue when handling images with zero dpi.

2020-12-30 v0.91.0

   Add set_custom_property() workbook method to set custom document
   properties.

2020-12-28 v0.90.0

   Added worksheet_by_name() workbook method to retrieve a worksheet
   in a workbook by name.

   Fixed issue where internal file creation and modification dates where
   in the local timezone instead of UTC.

   Fixed issue with "external:" urls with space in sheetname.

   Fixed issue where Unicode full-width number strings were treated as
   numbers in write().

2020-12-27 v0.89.0

   Added write_boolean() worksheet method to write Excel boolean values.


2020-12-26 v0.88.0

   Added transparency option to solid fills in chart areas.

   Added options to configure chart axis tick placement.

2020-12-26 v0.87.0

   Added chart pattern and gradient fills.

   Added option to set chart tick interval.

   Add checks for valid and non-duplicate worksheet table names.

   Added support for table header formatting and a fix for wrapped lines in
   the header.

   use minitest instead of test-unit

2020-11-01 v0.86.0
   Fix for images with negative offsets.

   Allow hyperlinks longer than 255 characters when the link and anchor
   are each less than or equal to 255 characters.

   Added hyperlink_base document property.

   Added option to allow data validation input messages with the ‘any’
   validate parameter.

   Added "stop if true" feature to conditional formatting.

   Added better support and documentation for html colours throughout
   the module. The use of the Excel97 colour palette is supported for
   backward compatibility but deprecated.

2020-10-23 v0.85.11
   Added Worksheet#update_range_format_with_params

2020-10-23 v0.85.10
   Fix frozen string litterals problems in Format#set_align

2020-09-07 v0.85.9
   apply pull-request #59 and #60

2020-09-03 v0.85.8
   apply pull-request #58 and #52

2019-06-20 v0.85.7
   apply pull-request #26

2019-02-10 v0.85.6
   Fix work well in ms windows.

2018-04-29 v0.85.5
   Added option to store hyperlink strings as string (strings_to_urls: false).

2018-04-29 v0.85.4
   Added option to store hyperlink strings as string (urls_as_strings).

2018-01-07 v0.85.3
   Fix hide first sheet problem #37

2017-11-05 v0.85.2
   Fix frozen string litterals problems #30

2017-05-19 v0.85.1
   Fix for missing method Workbook#set_tempdir

2016-06-01 v0.85.0
   Fix url encoding of links to external files and dirs.

2016-03-11 v0.84.0
   Added support for chart axis display units (thousands, million, etc.).
   Added option to set printing in black and white.
   Added chart styles example.
   Added gradient fill support.
   Added support for clustered charts.
   Added support for boolean error codes.

2015-04-12 v0.83.0
   Added option to combine two different chart types. For example to
   create a Pareto chart.

2015-04-12 v0.82.0
   Added extra documentation on how to handle VBA macros and added
   automatic and manual setting of workbook and worksheet VBA codenames.

   Fix for set_start_page() for values > 1.

   Fix to copy user defined chart properties, such as trendlines,
   so that they aren't overwritten.

   Added column funtion_value option to add_table to allow
   function value to be set.

   Allow explicit text categories in charts.

   Fix for column/bar gap/overlap on y2 axis.

2014-12-28 v0.81.1
   use test-unit gem instead of test/unit.

2014-12-04 v0.81.0
   Add chart axis line and fill properties.

2014-11-30 v0.80.0
   Chart Data Label enhancements. Added number formatting, font handling
   (Excel::Writer::XLSX issue #106), separator (Same issue #107) and legend key.
   Added chart specific handling of data label positions since not all
   positions are available for all chart types. Excel::Writer::XLSX Issue #110.

2014-11-29 v0.79.0
   Added option to add images to headers and footers.
   Added option to not scale heaader/footer with page.
   Fixed issue where non 96dpi images weren’t scaled properly in Excel.
   Fix for issue where X axis title formula was overwritten by the
   Y axis title.

2014-11-22 v0.78.0
   Added Doughnut chart with set_rotation and set_hole_size methods.
   Added set_rotation method to Pie charts.
   Added set_calc_mode method to control automatic calculation of
   formulas when worksheet is opened.


2014-08-19 v0.77.2
   Fix for issue #16.

2014-07-02 v0.77.1
   Fix for issue #14. thanks leonid-pavlov.

2014-05-12 v0.77.0
   Fix for incorrect chart offsets in insert_chart() and set_size().

2014-04-10 v0.76.3
   dependency must be written in gemspec

2014-04-10 v0.76.2
   Fix for issue #8
   use same rubyzip routine both in ruby-2+, 1.9+ and 1.8

2014-03-21 v0.76.1
   Fix for issue #7

2014-01-31 v0.76.0
   Added date axis handling to charts.
   Added support for non-contiguous chart ranges.
   Fix to remove duplicate set_column() entries.

2013-12-09 v0.75.0
   Added interval unit option for category axes.
   Fix for axis name font rotation.
   Fix for several minor issues with Pie chart legends.

2013-11-18 v0.74.0
   Improved defined name validation.
     Allow utf8 character etc.
   Added Chart#set_title option to turn off automatic title.
   Allow positioning of plotarea, legend, title and axis names.
   Fix for modification of user params in conditional_formatting.

2013-11-13 v0.73.0
   Added custom error bar option to charts.
   Fix for tables added in non-sequential order.
   Fix for scatter charts with markers on non-marker series.
   Fix for charts with star style markers

2013-09-21 v0.72.3.beta1
   speed up when script handles large number of cells.

2013-09-07 v0.72.2
   work well with rubyzip 1.0.0

2013-09-06 v0.72.1
   specify rubyzip version : <1.0.0

2013-09-03 v0.72.0
   Fix for charts and images that cross rows and columns that are hidden or formatted but which don't have size changes.
   Fix : Worksheet#write bug when using A1 notation and blank token.

2013-09-02 v0.71.0
   Fixed issue in image handling.
   Added fix to ensure formula calculation on load regardless of Excel version.

2013-07-13 v0.70.0
   Fix for rendering images that are the same size as cell boundaries.
   Fix for inaccurate column width calculation.
   Added Chart line smoothing option.

2013-06-30 v0.69.0
   Added chart font rotation property. Mainly for use with data axes to make the display more compact.
   Fix for issue where shapes on one worksheet corrupted charts on a subsequent worksheet.
   Fix for issue where add_button invalidated cell comments in the same workbook.
   Fix for set_selection with cell range.
   Fix for issue with image scaling.

2013-03-23 v0.65.1
   Bug fix for non-integer image scaling.
   Bug fix in Worksheet#set_first_sheet
   Bug fix in Worksheet#start_page=()

2013-03-23 v0.65.0
   Added options to format series Gap/Overlap for Bar/Column charts.

   Bug fix in Worksheet#write_formula
   (write_formula change original formula string)

   Bug fix in Worksheet#set_column
   (failure when parameter level is out of range)

2013-03-06 v0.64.1
   Bug fix in handling utf-8 string under ruby 1.8.7
   (examples/demo.rb failed under ruby 1.8.7)

   fix in Worksheet#set_h_pagebreaks

2013-03-05 v0.64.0
   Added the option to format individual points in a chart series.
   This allows Pie chart segments to be formatted.


2013-03-05 v0.63.0
  Added Chart data tools such as:
    Error Bars
    Up-Down Bars
    High-Low Lines
    Drop Lines.
  See the chart_data_tools.rb example.

2013-02-24 v0.62.0
  Added option for adding a data table to a Chart X-axis.
  See output from chart_data_table.rb example.

2013-02-23 v0.61.0
  Allow a cell url string to be over written with a number or formula
  using a second write() call to the same cell. The url remains intact.

  Added Worksheet#set_default_row method to set worksheet default values
  for rows.

  Added Chart#size method to set the chart dimensions.

2013-02-19 v0.60.0
 Added Excel form buttons via the worksheet insert_button() method.
 This allows the user to tie the button to an embedded macro imported
 using add_vba_project().
 The portal to the dungeon dimensions is now fully open.

 bug fix in Worksheet#write_url
 bug fix in bin/vba_extract.rb

2013-02-17 v0.59.0
 Added macro support via VBA projects extracted from existing Excel
 xlsm files. User defined functions can be called from worksheets
 and macros can be called by the user but they cannot, currently,
 be linked to form elements such as buttons.

2013-02-10 v0.58.0
 Added chart area and plot area formatting.

2013-02-10 v0.57.0
 Add major and minor axis chart gridline formatting.

2013-02-09 v0.56.0
 Fix for issue where chart creation order had to be the same as the insertion order or charts would be out of sync.
 Fixed issue where gridlines didn't work in Scatter and Stock charts.

2013-02-09 v0.55.0
 Added Sparklines.

2013-02-07 v0.54.0
 Added font manipulation to Charts.
 Added number formats to Chart axes.
 Added Radar Charts.

2012-11-30 v0.51.0
 Impliment Shape, Table as welll as Excel::Write::XLSX-0.51

2012-02-14 v0.0.4
 Fix for x-axis major/minor units in scatter charts.(CPAN_0.46)

2012-01-25 v0.0.3
 alignment format support. see examples/formats.rb

2012-01-20 v0.0.1
 initial release