Version 3.8.0 (2017-04-21)
--------------------------------------------------

     - added data validation feature for xlsx files

     - added Book::addPictureAsLink() method (xlsx)

     - added Book::moveSheet() method

     - improved speed of Sheet::setMerge() method (removed overlap checking)

     - improved compatibility with Apple Preview (xls)

     - fixed a bug in autofit feature for a custom format with % character
 
     - fixed issue with access to some worksheets for exported xlsx files
       from the SAS statistical package

     - fixed issue with 1900/2/1 date

     - fixed a bug with loading some xls files

     - fixed a bug in Book::load() and xlBookLoadUsingTempFile() with passing a full path 
       with directories for temporary files (xlsx)

     - fixed a bug in Sheet::setCol() (xls)

     - fixed Sheet::getNamedRange() and Sheet::namedRange() methods for correct extracting 
       the whole column or row as a range (xlsx)

New methods:

     - Book::moveSheet()

New methods only for xlsx format:

     - Sheet::addDataValidation()
     - Sheet::addDataValidationDouble()
     - Sheet::removeDataValidations()
     - Book::addPictureAsLink()


Version 3.7.2 (2016-11-27)
--------------------------------------------------

      - changed 3 overloaded Book::load() methods to Book::load(), Bool::loadSheet() and Book::loadPartially() for
        correct working in C++ Builder


Version 3.7.1 (2016-11-09)
--------------------------------------------------

      - added possibility to load workbook partially with specified sheet index and row range
 
      - added possibility to use temporary files to decrease memory consumption

      - added Swift 3.0 interface to Mac package

      - fixed a bug with unlocked pictures in protected sheets (xls)


Version 3.7.0 (2016-09-29)
--------------------------------------------------

      - added AutoFilter support (xlsx)

      - added Sheet::addIgnoredError() method for possibility to ignore some errors
        (green triangles on left sides of cells)

      - added password support and enhanced protection properties to Sheet::setProtect() method

      - added Sheet::setTabColor() method for setting sheet tab colors

      - added copying named ranges together with copying sheets

      - added Sheet::removeComment() method for removing comments in xls files

      - added Sheet::writeFormulaNum(), Sheet::writeFormulaStr() and Sheet::writeFormulaBool() methods
        for writing formula expressions with precalculated values

      - improved precision for autofit feature for non-windows platforms

      - added Sheet::table() and Sheet::tableSize() methods

      - added Sheet::writeError() method

      - added correct processing rows with r = "0" in xlsx files

      - now Sheet::readStr() method can read numbers, 
        added CellType parameters to Sheet::writeStr() for writing strings as numbers (xlsx)

      - changed behavior of Book::setLocale() method, UTF-8 value is ignored for wide strings now

      - added a recalculation of Sheet::lastRow() value after using of Sheet::clear() 
        and Sheet::removeRow() methods (xls)

      - taken into account also row size changes for Sheet::lastRow() according to UsedRange COM Interface (xls)

      - improved algorithms with ColInfo records for better compability with old Excel applications,
        modified Sheet::setCol() and Sheet::groupCols() methods (xls)

      - fixed a bug with reading data from rows and cells without explicitly specified references in xlsx files

      - fixed Sheet::removeRow() method (xls)

      - fixed Sheet::clear() method (xls)

      - fixed a bug in Book::delSheet() with removing necessary named ranges

      - fixed a bug with reading of numbers in some xlsx files (issue with corrupted locale)

      - fixed a bug in Sheet::setPicture2() with ignoring pos parameter for more than one pictures

      - fixed a bug in Book::dateUnpack() with return 1000 ms in some cases 

      - fixed a bug in Book::dateUnpack() method for dates before 1900-03-01

      - fixed a bug in XMLSheetImplT::calcFirstRow()

      - fixed Sheet::cellType() for a cell with formula string (t="str") (xlsx)

      - fixed an issue with loading some non-standard xlsx files

      - fixed a bug in Sheet::insertCol() (xlsx)

      - fixed issues with Sheet::setCol() on Mac (xlsx)

      - fixed a bug in Sheet::getPicture() for xlsx files
        (it was impossible to get correct parameters rowBottom, colRight, width and height for some pictures)

      - fixed Sheet::readStr() method in .NET wrapper

      - fixed a bug in Sheet::removeRow() (xlsx)

      - fixed a bug in Sheet::namedRangeSize() (xls)

      - fixed a bug with loading some xls files

      - fixed a python wrapper

New methods:
      
      - Sheet::addIgnoredError()
      - Sheet::setTabColor()
      - Sheet::removeComment() (xls)
      - Sheet::writeFormulaNum()
      - Sheet::writeFormulaStr()
      - Sheet::writeFormulaBool()
      - Sheet::writeError()
      - Sheet::table()
      - Sheet::tableSize()

New methods only for xlsx format:

      - Sheet::autoFilter()
      - Sheet::applyFilter()
      - Sheet::removeFilter()
      - AutoFilter::getRef()
      - AutoFilter::setRef()
      - AutoFilter::column()
      - AutoFilter::columnSize()
      - AutoFilter::columnByIndex()
      - AutoFilter::getSortRange()
      - AutoFilter::getSort()
      - AutoFilter::setSort()
      - FilterColumn::index()
      - FilterColumn::filterType()
      - FilterColumn::filterSize()
      - FilterColumn::filter()   
      - FilterColumn::addFilter()  
      - FilterColumn::getTop10()   
      - FilterColumn::setTop10()   
      - FilterColumn::getCustomFilter()   
      - FilterColumn::setCustomFilter()   
      - FilterColumn::clear()   
      

Version 3.6.5 (2015-11-18)
--------------------------------------------------

       - fixed CRITICAL bug in "LibXL for Linux" package with reading numbers (xlsx)

       - fixed bug with overwriting existing cell format if format parameter isn't specified or equals 0 (xlsx)

       - fixed bug with loading some xlsx files

       - taken into account also row size changes for Sheet::lastRow() according to UsedRange COM Interface


Version 3.6.4 (2015-09-24)
--------------------------------------------------
  
       - fixed a bug with dependency on current locale for decimal symbol 
         in Sheet::readNum() and Sheet::writeNum() methods (xlsx)

       - added a detecting overlaps to Sheet::setMerge() method


Version 3.6.3 (2015-09-17)
--------------------------------------------------

       - now all writing methods (writeStr, writeNum, writeBool) take into account 
         an existing column format if format parameter equals 0

       - added a position parameter to Sheet::setPicture() method:

           POSITION_MOVE_AND_SIZE - move and size with cells
           POSITION_ONLY_MOVE - move but don't size with cells
           POSITION_ABSOLUTE - don't move or size with cells

       - added support of GIF pictures (xlsx)

       - improved Book::addPicture() method: now type of picture is detected
         by signature instead of extension (xls)
           
       - improved Sheet::lastRow() and Sheet::lastCol() methods:
         taken into account rows without row index and columns without reference (xlsx)

       - improved Sheet::readFormula() method: now parameter separators (';' or ',') depends on locale

       - improved precision of autofit feature for multiple lines in a cell

       - added a bool return value to Sheet::getMerge() in C# interface

       - fixed bug with using named ranges in formula expressions (xls)

       - fixed bug with % symbol in formula expressions (xls)

       - fixed bugs with UTF-8 encoding in Book::load() and Book::save() methods

       - fixed bugs with UTF-8 encoding in Sheet::setName()

       - fixed a bug in Sheet::setColHidden() method (xls)

       - fixed a bug with crash on loading some corrupted xlsx files        

       - fixed bug with saving some graphics elements (xls)

       - fixed bug in Sheet::setAutoFitArea() method
         (the last column didn't automatically fit)

       - fixed bug with loading some xlsx files with zero sized internal files


Version 3.6.2 (2015-04-28)
--------------------------------------------------

       - added applyFont, applyFill, applyAlignment, applyBorder, applyNumberFormat attributes to styles
         for better compatibility with Apple Preview (xlsx)

       - added default Row records to a sheet,
         it should improve compatibility with some third-party Excel tools/applications (xls)

       - improved precision of autofit feature (sections)

       - added calcId attribute to calcPr element (xlsx) 

       - fixed bug in Sheet::writeFormula() with some R1C1 formulas

       - fixed bug in Book::addPicture2(): it didn't recognize some JPG files (xls)

       - fixed bug in Sheet::readStr() method with empty strings in some xlsx files

       - fixed loading of some ExtSST records (xls)

       - fixed bug with long custom format string

       - fixed bug with reading formula expressions with user defined functions (xls)

       - fixed bug with false loading some xls file with xlCreateXMLBook() function

       - fixed bugs with copying a sheet with pictures, charts or diagrams in Book::addSheet() (xlsx)

New methods:

       - Sheet::setAutoFitArea()

       - Sheet::printRepeatRows()

       - Sheet::printRepeatCols()

       - Sheet::printArea()


Version 3.6.1 (2014-11-11)
--------------------------------------------------

       - added more precision to autofit column width feature (number formats are taken into consideration)

       - optimized autofit column width feature: removed memory leak and increased performance
         (Sheet::setCol() with -1 width parameter)

       - added sheet dimensions to output files (xlsx)

       - added anyAttribute to CT_Sst type for reading some irregular xlsx files

       - standardized LibXL.framework in "LibXL for Mac" package, now it can be signed

       - fixed bug in Book::setActiveSheet() method when book contains a chart (xlsx)

       - fixed bug in Book::delSheet() (xls)

       - fixed errors with autofit in trial mode

       - fixed bug in Sheet::isDate(): added checking of quotes in custom format

       - fixed the memory bug when loading some xls files

       - fixed Sheet::firstRow() and Sheet::lastRow() methods (xlsx)

       - fixed bug with writing references in formula expressions in lower case in Sheet::writeFormula() (xls)

       - fixed bug with precision of real numbers in formula expressions in Sheet::readFormula() (xls)

       - fixed bugs with some formula expressions with SUM, AVERAGE, MIN, MAX functions (xls)

       - fixed bug with corrupted output files with macros on Solaris/AIX


Version 3.6.0 (2014-07-14)
--------------------------------------------------

       - added autofit column width support 
         (use -1 for width parameter in Sheet::setCol() method)

       - added hyperlink support 

       - added direct access to merges

       - added a possibility to create xltx and xlsm files

       - added a possibility to read errors "#NULL!", "#DIV/0!", "#VALUE!",
         "#REF!", "#NAME?", "#NUM!", "#N/A" with Sheet::readFormula() method 
         from xls files

       - added support Windows-1251 encoding in XML files

       - added support RGB colors without alpha component in xlsx files

       - added a cell range support in formula expressions (xls)

       - improved performance of Sheet::cellFormat() method (xls)

       - optimized xls files reading

       - fixed a bug with copying a sheet with pictures in Book::addSheet() (xls)

       - fixed a memory bug when used a second parameter in Book::addSheet()

       - fixed issue with nested quotes in formula expressions (xls)

       - fixed bug with using a single quote in formula expressions (xls) 

       - fixed issue with loading some xlsx files 
         which were created in Numbers on Mac ("Unknown exception")

       - fixed bug with UTF-8 encoding in custom format strings (xlsx)

       - fixed bug with reading some non-standard characters (xlsx)

New methods:

       - Sheet::mergeSize()

       - Sheet::merge()

       - Sheet::delMergeByIndex()

       - Sheet::hyperlinkSize()

       - Sheet::hyperlink()

       - Sheet::delHyperlink()

       - Sheet::addHyperlink()

       - Sheet::splitInfo() 


Version 3.5.4 (2014-01-10)
--------------------------------------------------

       - added xltx and xltm file support

       - added scopeId parameter to Sheet::getNamedRange(), Sheet::setNamedRange(), Sheet::delNamedRange(),
         Sheet::namedRange() methods for specifying scope of named range.

       - added Book::isTemplate() and Book::setTemplate() methods for detecting xltx files
         and converting from xlsx to xltx and vice versa

       - added "hidden" parameter to Sheet::getNamedRange() and Sheet::namedRange() methods

       - added support built-in named ranges in Sheet::getNamedRange() method (xls)

       - added compatibility between fonts/formats from xls files and fonts/formats from xlsx files
         (now formats and fonts from xls file can be used as initial parameter for Book::addFormat()
         and Book::addFont() methods for xlsx file and vice versa)

       - added Sheet::rightToLeft() and Sheet::setRightToLeft() methods that
         specifies whether the sheet in is "right to left" display mode.

       - added support shared formulas in Sheet::clear() method

       - fixed bugs with loading some xls files

       - fixed bug in Sheet::readFormula() (xls)

       - fixed Sheet::isDate() method (xlsx)      

       - fixed bug with writing some non-standard characters (xlsx)

       - fixed bug with writing some formula expressions with functions without arguments (xls)

       - fixed bug with placing pictures into a sheet with non-default font
         (incorrect aspect ratio and size)

       - fixed issue with overwriting some strings in xls files
      
       - fixed bug with shared formulas (xls)

       - fixed bug in Sheet::insertRow() for xls files

       - fixed bug with extracting pictures in some xls files


Version 3.5.3 (2013-07-03)
--------------------------------------------------

       - added two methods for getting and setting date system: 
         Book::isDate1904() and Book::setDate1904()

       - fixed bug with reading some strings with underscore (_) characters (xlsx)

       - fixed bug with loading some xlsx files


Version 3.5.2 (2013-06-25)
--------------------------------------------------

       - fixed bug with overwriting existing strings

       - fixed bug in NoteSh record ("CalcDelta size is incorrect")


Version 3.5.1 (2013-06-21)
--------------------------------------------------

       - fixed bug with overwriting existing strings


Version 3.5.0 (2013-06-19)
--------------------------------------------------

       - added support of Strict Open XML Spreadsheet format (Excel 2013)

       - increased precision of msec parameters in Book::dateUnpack() and 
         Book::dataPack() methods. Now it is 1/1000 seconds.

       - fixed bug with writing references to other sheets
         in formulas (xls)

       - fixed bug with reading shared formulas from xlsx format

       - fixed bug in Format::setPatternForegroundColor() and
         Format::setPatternBackgroundColor() methods (xlsx)

       - added support of dual format files (BIFF8/BIFF5)

       - added built-in named ranges for xls format

       - fixed bug in namedRangeSize() for xls format

       - fixed bug with named ranges that refer to external workbooks 

       - added support of characters which cannot be represented in XML (xlsx)

       - added warning if named range contains multiple parts

       - fixed bug with incorrect identification of 1900/1904 date formats in Excel for Mac (xlsx)

       - fixed bug with reading some formulas (xls)

       - fixed bug with writing formula with SUMPRODUCT function (thanks to Don Prouty, DSA) (xls)
 
       - fixed bug with loading/saving some xlsx files with drawings


Version 3.4.2 (2013-04-25)
--------------------------------------------------

       - fixed NoteSh record (some xls files couldn't be loaded)

       - fixed RRTabId record
         (Protected view mode was activated in Excel 2010 and Excel 2013
         in some cases)

       - fixed Book::insertSheet() method
         (named ranges, print areas, repeat rows and columns didn't remain 
          in corresponding sheets)

       - fixed Style record (some xls files couldn't be loaded)

       - added quotes for names with hyphen (xlsx)

       - fixed bug in Sheet::delNamedRange() (xlsx)
       
       - fixed bug with saving some xls files with pictures
         (output file was corrupt)

       - fixed bug with crash in MinGW 4.7
         (added __cdecl keyword)

       - fixed bug with Mac::Numbers compatibility

       - fixed bug with overlapping of calculated values 
         in cells with formula expression and format 
         for xlsx format (no screen refresh)

       - fixed bug in Sheet::writeFormula() method (xls)
         [ "incorrect token in formula" error message
         for some valid expressions ]

       - fixes for Apple clang compiler

       - updated ZipArchive library to version 4.5

       - fixed bug with column-based named ranges in
         Sheet::getNamedRange() and Sheet::namedRange() methods
         for xlsx format
         
       - fixed bug in Sheet::getPicture() for xlsx files

       - fixed bug in Sheet::insertRow() for xls files

       - fixed bug with loading some xlsx files ("mergeCell ref is invalid")

       - fixed bug with length of sheet name in UTF-8 encoding

       - fixed bug with loading some xlsx files ("bad end element" error)

       - fixed bug with SUMPRODUCT function in formula expression (xls)

       - fixed bug in Sheet::pictureSize() for xlsx files


Version 3.4.1 (2013-01-04)
--------------------------------------------------

       - added Book::sheetType() method for detection of chart sheet

       - fixed bug with loading some xls files

       - fixed bug in Sheet::delNamedRange() for xls files

       - fixed bug in Sheet::writeNum() method


Version 3.4.0 (2012-12-26)
--------------------------------------------------

       - added support of xlsm files

       - added UTF-8 support (mode is activated with book->setLocale("UTF-8"))

       - fixed bugs with loading some xls and xlsx files

       - fixed compatibility issues with Numbers for Mac

       - added support of empty cells in Sheet::cellFormat()

       - changed format picture property from "Move but don't size with cells" to "Move and size with cells"

       - fixed Sheet::setNamedRange(), Sheet::setPrintArea() and Sheet::setName() methods 
         for sheet's names with spaces (xlsx)

       - fixed bugs with some formula expressions with IF and AND functions (xls)
 
       - fixed bug with saving multi formatted cells in xlsx files

       - fixed bug in Book::delSheet() for xlsx files

       - fixed bug with reading some kind of error values

       - fixed issues with adding pictures into preloaded workbooks with pictures (xls)

       - fixed bug in Book::saveRaw() method (xls)

       - fixed possible memory leaks due to mismatched malloc/free functions (xlsx)

       - fixed bug in Sheet::cellFormat()

       - fixed bug with format/font inheritance for xlsx files

       - fixed Sheet::setPrintRepeatCols() method for xlsx files

       
Version 3.3.1 (2012-08-07)
--------------------------------------------------

       - fixed issue with adding pictures (red cross images) in xls files


Version 3.3.0 (2012-08-06)
--------------------------------------------------
Improvements:

       - added preserving macros and properties for xls files

       - added fullCalcOnLoad="true" attribute for xlsx files,
         instruction for Excel to calculate all formulas on loading

       - added defaultRowHeight property for xlsx files

       - changed internal version for xls files

       - added checking for corrupt xls files

Bug fixes:

       - fixed Sheet::getNamedRange(), Sheet::namedRangeSize() and Sheet::namedRange() methods (xls)

       - fixed Sheet::removeRow() for xls files

       - fixed bug in Sheet::getNamedRange() method (xlsx)

       - fixed bug with percent operator in formulas (xls)

       - fixed bug in Book::delSheet() method

       - fixed bug in Sheet::setPicture() method (xlsx)

       - fixed bug with comments (xls)


Version 3.2.4 (2012-04-25)
--------------------------------------------------
Improvements:

       - added two auxiliary methods for converting cell reference to row and column and vice versa

       - added Sheet::getTopLeftView() and Sheet::setTopLeftView() methods for getting/setting
         a view position in the sheet

       - added support for EMF pictures

       - added multisheet reference support in formulas in xls format, 
         for example: SUM(Sheet1:Sheet10!A1)

New methods:

       - Sheet::addrToRowCol()

       - Sheet::rowColToAddr()

       - Sheet::getTopLeftView()

       - Sheet::setTopLeftView()

Bug fixes:

       - fixed bug with loading some files

       - fixed performance issue with Sheet::setMerge() for xlsx files

       - fixed bug in OfficeArtBlip record

       - fixed bug with adding pictures to some xls files

       - fixed bug with macro records in xls files

       - fixed bug with writing strings with leading and trailing space symbols in xlsx format
         (added attribute xml:space="preserve" for such strings)

       - fixed bug in Sheet::setRowHidden() for xls format

       - fixed bug with getting named ranges in some xlsx files

       - fixed bug in Sheet::setCol() method for widths in range from 0 to 1 for xlsx format


Version 3.2.3 (2011-10-12)
--------------------------------------------------
Improvements:

       - added possibility to hide/unhide sheets
       
Bug fixes:

       - fixed bug in Book::addPicture2() for xlsx files

       - fixed bugs with loading some xls files

New methods:

       - Sheet::hidden()

       - Sheet::setHidden()


Version 3.2.2 (2011-09-22)
--------------------------------------------------

       - added support of inlineStr in cell's data type (xlsx)

       - added checking length of sheet name (it's allowed maximum 31 characters)

       - fixed bugs in copying formats and fonts, methods
         Book::addFormat() and Book::addFont() when are used initFormat and initFont parameters.
         Now it is possible to pass to these methods a format or a font from other workbook.

       - improved non-unicode strings: if a conversion of wide character to a multibyte character
         is not possible in the current locale then LibXL uses '?' symbol in this place

       - fixed bug in Sheet::colWidth()

       - added R1C1 style formula support

       - improved formula parsing, now it is possible to use comma (,) and semicolon (;)
         as parameter dividers in functions 

       - fixed bug in Sheet::removeCol() (xlsx)

       - optimized speed in Sheet::clear() method

       - optimized speed of firstRow/lastRow/firstCol/lastCol methods for xlsx part,
         added ignoring a trial banner in trial mode

       - fixed bug with loss of formatting when user copy-paste cells between workbooks (xls)

       - small memory usage optimization for xlsx part

       - changed the open mode to "shared" for xlsx files

       - fixed bug in the picture extraction algorithm:
         now Book::addPicture() and Sheet::getPicture() functions return zero-based indexes


Version 3.2.1 (2011-08-08)
--------------------------------------------------

       - fixed critical bug from previous version: incorrect reading/writing numbers
         with decimal point in xlsx files

       - fixed bug in Sheet::readNum() and Sheet::writeNum() for big-endian platforms

       - fixed bug with loading some xls file, before Book::load() can incorrectly 
         return false with error message "Xls::read(): workbook section is not found"


Version 3.2.0 (2011-07-25)
--------------------------------------------------
Improvements:

       - added possibility to insert a new sheet at any position

       - added possibility to extract pictures

       - added possibility to extract page breaks

       - added possibility to extract named range by name (Sheet::getNamedRange) and by index (Sheet::namedRange)

       - added possibility to fit a sheet to specified number of pages (Sheet::setPrintFit)

       - added access to R1C1 reference style property (Book::refR1C1 and Book::setRefR1C1)

       - added BIFF version property for xls files (Book::biffVersion)

       - added return value for Book::setLocale() method

       - improved Sheet::writeFormula(), added support references to other sheets within the workbook

       - improved method Sheet::setPicture2(): picture takes size of underlying cell/merging cells 
         if width and height aren't specified

       - removed line breaks in xml files (xlsx)

New methods:
 
       - Book::insertSheet()

       - Book::pictureSize()

       - Book::getPicture()

       - Book::refR1C1()

       - Book::setRefR1C1()

       - Book::biffVersion()

       - Sheet::pictureSize()

       - Sheet::getPicture()

       - Sheet::getHorPageBreakSize()

       - Sheet::getHorPageBreak()

       - Sheet::getVerPageBreakSize()

       - Sheet::getVerPageBreak()

       - Sheet::getNamedRange()      

       - Sheet::namedRangeSize()

       - Sheet::namedRange()

       - Sheet::getPrintFit()

       - Sheet::setPrintFit()

Bug fixes:

       - fixed bug in Sheet::getNamedRange()

       - fixed string interoperability in .NET wrapper

       - fixed bug in Sheet::isDate() method for xlsx files

       - fixed bug with reading formatted strings

       - fixed bug in writeFormula 
         (removed error message "toReversePolish: unknown token" for some correct values)

       - fixed bug with load/save conditional formatting

       - fixed bug in Sheet::isDate() method 

       - fixed bug in ExternSheet record (xls)

       - fixed method Book::delSheet() (xls)

       - fixed Book::setActiveSheet(): deselecting other sheets (xlsx)

       - fixed Sheet::setPicture2(): checking ranges of offset_x and offset_y parameters (xls)

       - fixed bug in fixed Book::delSheet(): removing definedName element (xlsx)

       - fixed bug in Sheet::setPrintRepeatRows() and Sheet::setPrintRepeatCols(): added quotation for sheet's name 
         with space symbols (xlsx)

       - fixed bug in Sheet::setName(): added checking dependencies in definedNames block (xlsx)

       - fixed Sheet::setPicture()

       - fixed Sheet::setName(), added checking dependencies for old name in xlsx-file

       - fixed Sheet::lastRow() and Sheet::lastCol(), taken into account non-default height of cell

       - method Sheet::getNamedRange() is case-insensitive now

       - fixed bug with "Unexpected attribute" error for xml:space attribute in formula element (xlsx)

       - fixed addPicture/setPicture for different sheets (xlsx)

       - fixed bug when writing string constants in formulas (xls)

       - added removing storage extension elements <extLst> from sheets and workbooks (xlsx)


Version 3.1.0 (2010-11-16)
--------------------------------------------------
Improvements:

       - named ranges support

       - RGB colors support for xls format

       - added offset_x and offset_y parameters in Sheet::setPicture() method

       - print area support

       - print titles support (repeated rows and columns on each page)

       - added two sheet's properties: summaryBelow and summaryRight for grouped cells

       - reduced memory consumtion for reading/writing xlsx files

New methods:

       - Sheet::setNamedRange()

       - Sheet::delNamedRange()

       - Sheet::setPrintRepeatRows()

       - Sheet::setPrintRepeatCols()

       - Sheet::setPrintArea()

       - Sheet::clearPrintRepeats()

       - Sheet::clearPrintArea()

       - Sheet::groupSummaryBelow()

       - Sheet::setGroupSummaryBelow()

       - Sheet::groupSummaryRight()

       - Sheet::setGroupSummaryRight()

Bug fixes:

       - fixed bugs in Sheet::setCol() and Sheet::groupCols() methods

       - added stretch property for pictures in xlsx files

       - fixed bug with adding pictures in existing xls-file

       - fixed bug with shared formulas


Version 3.0.2 (2010-09-15)
--------------------------------------------------

       - improved writing performance for xlsx format

       - changed all "unsigned short" types to "int", 
         therefore now it's possible to write more than 65536 rows in xlsx format       


Version 3.0.1 (2010-08-25)
--------------------------------------------------

       - fixed bug with loading some xlsx files (unknown attribute error)


Version 3.0.0 (2010-08-24)
--------------------------------------------------

       - Excel 2007/2010 support (xlsx)

       Changes in binary interface:

       - optimized reading speed and memory consumption for big files

       - fixed bug with sheet's name in Japanese/Korean/Chinese languages in multi-byte interface

       - changed behaviour of Sheet::split() method

       - added method Sheet::setCellFormat()

       - removed message "too many dir sectors - perhaps it's infinite loop" for large files

       - fixed bug in OfficeArtFDGGBlock

       - added access to list of formats and fonts in document

       - added msec parameter in datePack/dateUnpack

       New methods:

       - xlCreateXMLBook()

       - Book::format() 

       - Book::formatSize()

       - Book::font()

       - Book::fontSize()

       - Book::colorPack()

       - Book::colorUnpack()

       - Book::rgbMode()

       - Book::setRgbMode()

       - Sheet::setCellFormat()


Version 2.4.3 (2010-06-07)
--------------------------------------------------

       - added Sheet::setProtect() and Sheet::protect() methods

       - fixed bug with loading xls files with form controls

       - fixed bug in Sheet::writeFormula()

       - fixed some incorrect relative references

       - fixed bug with reading string values in shared formula

       - fixed printZoom default value

       - fixed .NET interface: Book::errorMessage(), Book::sheetCount(), Book::activeSheet()

       - fixed bugs with loading some xls files

       - fixed bug with reading coordinates in shared formula

       - fixed bug with incorrect reading formula with external reference


Version 2.4.2 (2010-05-12)
--------------------------------------------------
Improvements:

       - support BMP and DIB picture formats

       - loading pictures from memory buffer

New methods:

       - Book::addPicture2()

Bug fixes:

       - fixed bug with reading shared formulas

       - fixed issue with loading workbook with dropdown lists ("error in record FtLbsData")

       - changed return type "unsigned short" to "int" in firstRow/lastRow/firstCol/lastCol methods

       - restoring normal book state after loading error       

       - fixed datePack/dateUnpack for time values

       - fixed bugs with loading some xls files


Version 2.4.1 (2010-03-01)
--------------------------------------------------

       - removed memory leaks

       - small fixes


Version 2.4.0 (2010-02-25)
--------------------------------------------------
Improvements:

       - formula support

       - ability to change a default font

New methods:

       - Sheet::readFormula()

       - Sheet::writeFormula()

       - Sheet::isFormula()

       - Book::defaultFont()

       - Book::setDefaultFont()

       
Version 2.3.2 (2010-02-01)
--------------------------------------------------

       - fixed bug with saving some xls files

       - fixed bug in margin methods                      


Version 2.3.1 (2010-01-20)
--------------------------------------------------

       - fixed bug with Book::loadRaw() on Linux and Mac

       - changed behavior Book::saveRaw(): now LibXL writes raw data to internal memory buffer


Version 2.3.0 (2010-01-14)
--------------------------------------------------
Improvements:

       - loading/saving a book from/to memory buffer

       - copying sheets and cells

       - access to format for any cell (without detecting type)

       - now library doesn't touch existing formats when user edits an existing document

       - renaming sheets

New methods:
      
       - Book::loadRaw()

       - Book::saveRaw()

       - Book::copySheet()      

       - Sheet::copyCell()

       - Sheet::cellFormat()

       - Sheet::setName()
       
Bug fixes:

       - fixed bug with opening xls in Numbers (iWork on MacOSX)

       - fixed Sheet::colWidth() and Sheet:setCol(), precise column's widths now

       - fixed issues with loading some xls files

       - fixed bug when user loads several xls files in memory at a time

       - fixed Sheet::setRow()       

       - values from firstRow/lastRow/firstCol/lastCol methods are updating in run-time now


Version 2.2.2 (2009-10-13)
--------------------------------------------------
Improvements:

       - inserting/removing rows/columns

       - removing merges

New methods:

       - Sheet::insertCol()

       - Sheet::insertRow()

       - Sheet::removeCol()

       - Sheet::removeRow()

       - Sheet::delMerge()


Version 2.2.1
--------------------------------------------------
      
       - new method Sheet::isDate() for fast detecting any date/time values

       - fixed Sheet::split()

       - removed GLIBCXX_3.4.9 dependency in Linux package


Version 2.2.0
--------------------------------------------------
Improvements:
       
       - support comments

       - sheet splitting  

       - grouping and outline                      

       - clear areas in sheets

       - extracting dimensions of sheets

New methods:

       - Sheet::readComment()

       - Sheet::writeComment()

       - Sheet::split()

       - Sheet::split2()

       - Sheet::groupRows()

       - Sheet::groupCols()

       - Sheet::clear()

       - Sheet::firstRow()

       - Sheet::lastRow()

       - Sheet::firstCol()

       - Sheet::lastCol()

Bug fixes:
       
       - fixed warning when file is opened in Excel 2007 

       - opens xls with external links without errors

       - fixed some minor bugs


Version 2.1.0
--------------------------------------------------
Improvements:
        
       - support pictures (png, jpg, wmf)     

       - page breaks support

       - read/write bool values

       - read/write blank cells

       - detecting cell's type

       - read cells with formula

       - get/set active sheet

       - get row height and column width

New methods:

       - Book::addPicture()

       - Book::activeSheet()

       - Book::setActiveSheet()       

       - Sheet::cellType()

       - Sheet::setPicture()

       - Sheet::readBool()

       - Sheet::writeBool()

       - Sheet::readError()

       - Sheet::colWidth()

       - Sheet::rowHeight()

       - Sheet::setHorPageBreak()       

       - Sheet::setVerPageBreak()

Bug fixes:      
     
       - opens xls with macros without errors       

       - opens xls with charts without errors

       - fixed some minor bugs


Version 2.0.0
--------------------------------------------------
New release with a completely new redesign

