ChangeLog

Version 2.10.0.9 (dev) not released yet
=======================================

**Incompatible changes**
------------------------
- Add width to struct zint_vector_circle
  NOTE: backward incompatible drawing of MaxiCode finder (bullseye)
- Check that scale/height/whitespace/border are reasonable values
  NOTE: will return error if values outside ranges
- raster.c: Bug fix for heap-buffer-overflow (#204 ARM-Cortex)
  NOTE: may cause single-pixel changes to height depending on height/scale used
- JAPANPOST: return error if input data would be truncated
  NOTE: previously was silently truncated
- PDF417: return warning if specified cols increased
  NOTE: previously no warning was returned
- Matrix symbols: horizontal boundary bars appear outside any vertical
  whitespace
  NOTE: previously appeared inside vertical whitespace

Changes
-------
- RMQR: add ECI support
- CODE93: don't display check characters in HRT (as per standard Figure B1)
  unless option_2 = 1 or vers=1
- GUI: separate out MAXICODE Structured Carrier Message fields
- library.c: Check that scale/height/whitespace/border are reasonable values:
  scale (0.01-100), height (0-2000), whitespace_width/height (0-100),
  border_width (0-100)
- CLI: allow both e.g. '-height' and '--height' (getopt_long_only())
- UPC/EAN: add guard_descent
- Add output_options BARCODE_QUIET_ZONES and BARCODE_NO_QUIET_ZONES
- Allow dummy AI "[]" if GS1NOCHECK_MODE and has data (#204)
- raster.c: improve non-half-integer interpolation performance
- Add Structured Append support for AZTEC, CODEONE, DATAMATRIX, DOTCODE,
  GRIDMATRIX, MAXICODE, MICROPDF417, PDF417, QRCODE, ULTRA
- ULTRA: add revision 2 support (based on BWIPP 2021-09-28 update)
- Add compliant height
- GUI: add Menu, copy to clipboard EMF/GIF/PNG/TIF, errtxt bar and status bar,
  icons (feathericons)
- CODABAR: add show check digit option
- DAFT: max chars 50 -> 100
- CMake: separate no-optimize from ZINT_DEBUG into new ZINT_NOOPT option
- PDF417: add specify rows option
- Add HEIGHTPERROW_MODE input mode flag
- DBAR_EXPSTK: add max rows option
- CODE16K/CODE49: add min rows option
- GUI: add CLI equivalent dialog (#163)
- Add ZBarcode_BarcodeName()
- GUI: data dialog: convert Line Feeds if escaping on input, escape on output
- DATAMATRIX: new algorithm for (near-)optimal encoding, props Alex Geller
- CLI/GUI/Tcl: add --fast option to select faster but less optimal DATAMATRIX
  algorithm (previous default)
- Matrix symbols: change horizontal boundary bars to appear outside any
  vertical whitespace, as they're decorative rather than functional (#247)
- FIM: Add support for FIM E

Bugs
----
- GUI/CLI: fix dev version test
- library.c: error_tag(): check error_number < ZINT_ERROR on WARN_FAIL_ALL
- vector.c: enforce minimum scale >= 0.1 and allow in GUI
- Suppress some pedantic warnings, props codemonkey82 (#204)
- gs1.c: Allow 0-length AI data if GS1NOCHECK_MODE, props codemonkey82 (#204)
- raster.c: avoid distributive multiplication with floats to lessen chances of
  platform variation (#204 ARM-Cortex crash)
- common/emf/output/raster/vector.c: use new stripf() func to workaround
  float variations
- raster.c: Don't add height offset for text if scale < 1.0 (as won't print)
- ISBNX: fix not returning error number (warning) correctly
- *.rc: fix VER_FILEVERSION_STR format (, -> .), props Jeff Skaistis
- PDF417: fix cols/rows calculation to require multiple <= 928 codewords
- raster.c: fix possible blank rows appearing in CODE16K, CODE49, PHARMA_TWO,
  PDF417 & CODABLOCKF due to height/scale rounding, props codemonkey82 (#204)
- library.c: check for stacking symbols >= 200
- DATAMATRIX: fix mis-encoding of non-encodables in X12 and EDIFACT modes,
  props Alex Geller
- DATAMATRIX: fix mis-encoding of FNC1/GS in EDIFACT in GS1 mode
- Allow for dot overspill in height of vertical box sides (dotty mode)


Version 2.10.0 2021-08-14
=========================

**Incompatible changes**
------------------------
- Add halign (horizontal align) to struct zint_vector_string
  NOTE: backward incompatible text drawing for UPC/EAN
- Change height and row_height array to floats
  NOTE: may cause changes in heights

Changes
-------
- Move project history/version from manual.txt and backend/README into this file
- Command line switches -d or -i for code data may now be at any position.
- Add rotation for vector formats
- Change double to float for performance in many internal places
- Ticket 197: optimize raster scaling for 0.5 substeps;
  ignore raster scaling < 0.5 as pixels lost.
- Ticket 197: add output option to bypass time-intensive buffer_plot()
  (OUT_BUFFER_INTERMEDIATE)
- Reduce BMP size by using 1 bit per pixel (except Ultracode)
- New warn_level field, WARN_FAIL_ALL
- Add GS1NOCHECK_MODE to input_mode (note was ZPL compatibility mode
  WARN_ZPL_COMPAT to warn_level)
- Remove version info from zint.h and put in zintconfig.h via zintconfig.h.in
- Add ZBarcode_Cap()
- Add GUI symbology filter, separate settings for each symbology
- Require cmake 3.5, use PNG::PNG and add Qt6 build option
- Make library fully stack-based so reentrant apart from file operations
- Performance improvements (large data) for AZTEC/HANXIN/GRIDMATRIX/PDF417/QR
- Option scmvv for MaxiCode #212; postcode needn't be space-filled
- eci: Add support for all ECIs (Big5, Korean, UCS-2BE)
- CLI: Handle UTF-8 args on Windows; -b <barcode name>
- DATAMATRIX: make EOD encodation strictly ISO 16022 compliant
- png.c: Use palette for file size savings
- tif.c: Use palette/bilevel/LZW to reduce file size, alpha/CMYK support
- Option gs1parens (GS1PARENS_MODE)
- MAXICODE: Rejig raster output to more closely match ISO 16023:2000
- C25STANDARD/C25INTER/C25IATA/C25LOGIC/C25IND: add check digit option (#216)
- Use zint-64.svg for smoother icons, props frhun
- Add whitespace_height to zint_symbol (vertical whitespace)
- AZTEC: optimize populate_map (good for small data) - avoids MSVC bug also
- Various workarounds for other MSVC bugs
- CMake: Windows compatible, backend/tests & frontend/tests now subprojects
  using new zint_add_test.cmake file, static build, new ZINT_USE_PNG and
  ZINT_USE_QT options, getopt moved to subproject and getopt detection,
  sanitizer flag detection, and many other improvements, props Alonso Schaich
- PLESSEY: add options NCR weighted mod-10, hide check digit(s) in HRT
- Fuller error messages; more comments zint.h
- CMake: simplication and modernization, Qt5/6 version, props Null Void (atom)
- POSTNET/PLANET: allow up to 38 chars (ZINT_WARN_NONCOMPLIANT) (see [d7ac9c])
- RMQR: update to new draft ISO/IEC JTC1/SC31N000 (Draft 2019-6-24)
- ULTRA: update max size and min cols based on BWIPP 2021-07-14 update

Bugs
----
- Code16k selects GS1 mode by default in GUI
- Ultracode: use white pixels instead background for white modules.
- EMF: fix Ultracode colours.
- Ultracode: fix count of codewords when using reader init mode
- Databar Limited: add 5 right guard spaces (ISO/IEC 24723:2010 6.2 (e))
- Data Matrix: avoid unnecessary latch in X12 mode at end of data, #208
- Data Matrix: fix eod shift -> 0 pad
- POSTNET/PLANET: remove extra 1 module space
- Aztec: fix bit-stuffing (again!) and Aztec Rune: fix for data >= 128
- EAN composite: allow for check digit + buffer overflow for too long add-on
- Han Xin fix 0xFFE terminator
- GUI: Use UTF-8 for QSettings (non-ASCII was getting garbled on restore)
- DOTCODE: Fix best_mask -> high_score prime test
- CODEONE: various fixes, ECI support
- #218 Prevent buffer overflow in ean_leading_zeroes by checking max lengths
- MAXICODE: fix mask typos for ECI 3/4 bytes
- Fix UPCEAN small font ignored/disabled (introduced [1adba1])
- get_best_eci: check UTF-8 before returning 26
- MAXICODE: fix shifting from sets C/D/E to A/B (only latch available)
- EAN14, NVE18: fix checksum calc for zero-filled input
- png: ULTRA: allow for fgcolour if bind/box (MR #111)
- DOTCODE: allow for max 200 cols in CLI, GUI, Tcl
- CODEONE/DATAMATRIX/MAILMARK/PLESSEY: fix some 32-bit/portability bugs
- CODABAR: fix CALCIUM define address use, props Alonso Schaich
- DATAMATRIX/CODEONE: Use LCM in look ahead tests to avoid floats (#228)
- raster/output: use new isfintf() to test floats integral (CodeQL)
- ZBarcode_Encode: don't reinit symbol->outfile, props Alonso Schaich
- CODEONE: is_last_single_ascii() out-of-bounds, #232 CI-Fuzz, props Jan Schrewe
- library: compat symbology 39 fix; ISBN: "X" check
- backend/CMakeLists.txt: output dir for zintconfig.h, props Andre Maute (#238)
- UPCE/UPCE_CC: allow check digit (same as UPCA/UPCA_CC) so selecting composite
  doesn't give error
- bmp/emf/ps.c: allow for foreground colour in ULTRA
- bmp/gif/pcx.c: allow for BARCODE_STDOUT (fflush/fclose)
- ps.c: fix buffer overflow on colour_to_pscolor() CMYK
- composite: fix buffer overflow for large linear and small composite
- composite: clear errtxt when bumping from CC-A -> CC-B -> CC-C
- CODABLOCKF: prevent cols > 62; fix pTestList buffer overflow
- RMQR: allow for righthand vertical timing pattern in populate_grid()


Version 2.9.1 2020-08-04
========================

Changes
-------
- Ticket 122: Implement transparency support
  - Ticket 129: -nobackground option added
  - -fg and -bg may contain an alpha channel
  - structure zint_symbol may now contain an alpha channel as output
- Added DPD Symbology
- Add support for Unicode escape characters

Bugs
----
- EMF text colour does not change
- Fix QPainterPath dependency for Visual Studio


Version 2.9.0 2020-07-31
========================

Changes
-------
- Dotcode: adapt to AIM DOC Revision 4
- New option "-separator=" for zint to specify the separator height of stacked
  symbologies.
- make internal routines invisible by a static function definition.
- CODE11: make adding check digits an option, selectable to 2 (default as now),
  1 or none
- LOGMARS restrict max length to 30 per MIL-STD-1189 Rev. B; make check digit
  optional
- CODE39/EXCODE39: max length now 85
- VIN code extended to international licence plates
- CODABAR: 3 data characters minimum (plus start/stop), check digit option added
- Channel Code: performance improvement
- QT GUI:
  - GRIDMATRIX/HX/MQR/QRCODE/RMQR: allow separate selection of size/ECC
  - add DAFT and VIN Symbologies
  - Separarator option for DATAMATRIX
  - Ticket 162: parse escape sequences
  - gui element reassigments
- UPC/EAN/ITF-14 Composite: Ticket 72: new option --addongap (default:9) to set
  the gap between code and composite.
- TCL Backend: The following symbology names were renamed:
  - Matrix2of5 -> Standard2of5
  - PDF417Trunc -> PDF417Compact
  - RSS14Stacked -> GS1DataBarStacked
  - RSS14Stacked -> GS1DataBarStacked
  - RSS14StackedOmni -> GS1DataBarSstackedOmni
  - RSS14ExpandedStacked -> GS1DataBarExpandedStacked
  - OneCode -> USPSIntelligentMail
  - EAN128-CC -> GS1-128-CC
  - RSS14-CC -> GS1DataBarOmni-CC
  - RSSLimited-CC -> GS1DataBarLimited-CC
  - RSSExpandedStacked-CC -> GS1DataBarExpanded-CC
  - RSSEXPanded-CC -> GS1DataBarExpanded-CC
  - RSS14Stacked-CC -> GS1DataBarStacked-CC
  - RSS14Omni-CC -> GS1DataBarStackedOmni-CC
  - RSSExpandedStacked-CC -> GS1DataBarExpandedStacked-CC
  ** Potential incompatibility **
- API Symbol names changed but old names preserved in zint.h
  - BARCODE_C25MATRIX -> BARCODE_C25STANDARD
  - BARCODE_EAB128_CC -> BARCODE_GS1_128
  - BARCODE_RSS14 -> BARCODE_DBAR_OMN
  - BARCODE_RSS_LTD -> BARCODE_DBAR_LTD
  - BARCODE_RSS_EXP -> BARCODE_DBAR_EXP
  - BARCODE_PDF417TRUNC -> BARCODE_PDF417COMP
  - BARCODE_RSS14STACK -> BARCODE_DBAR_STK
  - BARCODE_RSS14STACK_OMNI -> BARCODE_DBAR_OMNSTK
  - BARCODE_RSS_EXPSTACK -> BARCODE_DBAR_EXPSTK
  - BARCODE_ONECODE -> BARCODE_USPS_IMAIL
  - BARCODE_EAN128_CC -> BARCODE_GS1_128_CC
  - BARCODE_RSS14_CC -> BARCODE_DBAR_OMN_CC
  - BARCODE_RSS_LTD_CC -> BARCODE_DBAR_LTD_CC
  - BARCODE_RSS_EXP_CC -> BARCODE_DBAR_EXP_CC
  - BARCODE_RSS14STACK_CC -> BARCODE_DBAR_STK_CC
  - BARCODE_RSS_EXPSTACK_CC -> BARCODE_DBAR_EXPSTK_CC

Bugs
----
- Ticket 185 EMF export corrections
  - fine scaling by the use of float arithmetic
  - full header (extension1&2) with correct size field
- Ticket 190: Aztec buffer overrun fixed
- Ticket 191 suppress clang-tidy warnings: raster.c, composite.c, qr.c
- Ultracode internal encoding bugs, ECI 899
- GS1 data: exclude DEL character
- Ticket 192: missing malloc.h include for Windows compilers.
- Correct GS1 AI 253 & 255 length from 14 to 13
- Codablock F changes:
  - FNC4 may not be split over rows.
  - Use Code128 routine for one line Codablock FIM
  - Correct column range to 9 ... 62
  - allow new options: row count and column count, border_width and HIBC mode
  - pad correctly empty and last row
  - separator length correction
- Code128 changes:
  - Correctly encode CodeA charset with control-character only data
  - Improve coding of Extended ASCII (FNC4)
  - Checksum calculation overflow protection
  - EAN128 may reduce length
- Check for incomplete escape sequences on data specification: "\" without
  following character.
- Code16K fixes: remove extended ASCII latch, pad character
- Restructuring to have common code centralized:
  - Code128 routines for Codablock&Code16K
  - output.c has common routines from raster.c and symbologies.
- HIBC_39: restrict max length to 68 otherwise to avoid overrun
- Code One: protect agains overrun
- Telepen: allow DEL
- GS1 Databar/ GS1-128 Composite:
  - Separator bar corrections
  - Ticket 200: spurious additional row
  - Correct names in GUI
- Compact PDF417:
  - Add missing stop pattern.
  - Rename in GUI: "PDF417 Truncated" to "Compact PDF417".
- PDF417: Optimize text compaction mode switch.
- Human readable representation: Code128, Code39, Code93 special characters
  are shown by a blank.
- ITF14: Ticket 201: allow bind option


Version 2.8.0 2020-04-10
========================

Changes
-------
(New) Tests for auspost, codablock, composite, dotcode, general, telepen,
  upcean, all output formats
- QR, Han Xin, Grid Matrix: the multi byte compaction schemes (ex: Kanji)
  are used by some decoders as codepage information (Ex: GB2312) and output
  may be translated to UTF-8. This may destroy the data in a not controlable
  manner.
  In consequence, multibyte compaction schemes are disabled by default.
  The new option --fullmultibyte (option_3 = ZINT_FULL_MULTIBYTE) enables this
  optimisation.
- Add new symbology "Ultra Code" with the ability to output colour codes.

Bugs
----
- Ticket 181 penetration test found many bugs:
  - Auspost: null bytes in content caused segfault
  - Codablock: data 0x1a..0x1f caused segfault
  - Dotcode: overrun in binary mode, overrun in codeword_array buffer
      Correct encoding of HT/FS/GS/RS when shifting to code set B
  - empty or unreadable input file
  - telepen: buffer overflow
  - EANUCC: buffer overflow on multiple + (multiple extension bars)
  - Maxicode: index overrun on numeric compaction
  - CodeOne: Simple i indexing not sp + i in C1_ASCII numeric latch loop.
  - Aztec: free memory
- Ticket 183: Databar stacked separator correction
- Ticket 182: Output bitmap type was char, where some targets assigned 0
  if pixel colour >127 (e.g. negative). API change to use unsigned char.
- HanXin: wrong codepage, gb2312 instead gb18030.
- PDF417: corrected alloced sizes to max characters
- Ticket 189: FNC1 encodation fixed (FLG(0) missing after FLG(n))
- PCX format: added missing bytes_per_line if bitmap width is odd.


Version 2.7.1 2020-02-01
========================

Changes
-------
- QR encoding optimized to get smaller code matrix results
- PDF417: remove obsolete codeword number option in qzint.
  Option removed in qtzint.
- Removed annex B (3 digit country codes) and annex C (GS1 General
  Specification) from the manual. This material may be found elsewhere.
- MAC homebrew remark added to the documentation
- Correct cmake file to match BSD-3-clause licence

Bugs
----
- Correct uninitialized warning in gridmatrix.call
- do not export internal functions
- raster painting of UPC-A bound check
- pdf417 documentation corrected: change flag -security to -secure
- Dot Code encoding ECI number corrected
- Corrected postscript plotting error
- Datamatrix: corrected possible buffer overrun in 3 characters to 2 byte
  encodings.
- In 2.7.0 removed interface "ZBarcode_Render" still declared
- vc6 make was missing (trivial) resource.h


Version 2.7.0 2019-12-05
========================

Changes
-------
- Automatic height option added to qzint
- DotCode in line with new specification
- New GS1 AIs 7240, 235, 417, 7040, 8026, updated checks for 7007, 8008
- New Symbology rMQR
- QR and Qridmatrix optimisation for GB2312
- removed depreciated interface for gLabels program. Please use current
  interface.

Fixed bugs
----------
- Many improvements in composite codes
- SVG output corrected for messages containing "<" and "&".
- GS1-128 and RSS may only be used with GS1 contents
- Han Xin chinese character handling


Version 2.6.7 2019-10-07
========================

Changes
-------
Ticket 127: Allow to code ECI 3 if explicitly given for debug purposes.
**Incompatible change**
"--eci 3" now leads to included ECI information.
"--eci 0" may now be used to not include any ECI information.
The default of the parameter changed from 3 to 0.

Fixed bugs
----------
Ticket 146, 165: fix wrong encoding of RSS composite codes


Version 2.6.6 2019-09-18
========================

Fixed bugs
----------
Ticket 161: PDF row size may be set
Ticket 155: PDF numeric compaction
Ticket 164: crash due to call of svg_plot withnull vector
Ticket 119: Crash on bullseye raster drawing
qtzint: Micro-QR version option choice corrected (+1 missing).
Datamatrix: code corruption when ECI was encoded and base256 encoding was
automatically chosen.


Version 2.6.5 2019-09-02
========================

Fixed bugs
----------
backend/main.c was missing
Maxicode bullseye rastering for scale = 0.5
Crash in utf to eci.
eci ISO 8859-16 table missing data line
upce check for 7 digit input (causes crash) and BARCODE_UPCE_CHK -> BARCODE_UPCE
mapping removed
US imail check for invalid barcode identifier and allow 0/5/9/11 length zip
maxicode code set correction
cmake flags for debugging and sanitize options
unit tests for the changes, with a simple test suite based on qrencode/tests


Version 2.6.4 2019-08-30
========================
Fixed bugs: EMF output, maxicode plot/content
Datamatrix DMRE updated to the ISO/IEC29158 version. This is incompatible in the
way that the old -vers numbers for DMRE are re-assigned.
The separator of GS1-datamatrix may be switched from FNC1 to GS.
GS1 field length check AI 8009 and 7230 to 7239 currected.


Version 2.6.3 2018-02-15
========================
New symbology Royal Mail 4-state Mailmark. Added North America VIN verification.
Bugfixes for TIF and EMF output and escape character handling.


Version 2.6.2 2017-10-22
========================
Further bugfixes in Aztec and DotCode. Expand escape sequence support
to API and GUI. Handle UTF BOM. Bugfix raster images of Maxicode.


Version 2.6.1 2017-08-27
========================
Library bugfixes: EDIFACT unlatch in Data Matrix, Add UPNQR, Improved Aztec
data compression, Detect Code 128 data too long, Make error codes consistent.
GUI improvements: Additional clipboard options, remove border width bug,
remove changing background colour bug, remember more settings and make GUI
more consistent with user expectations. All windows now resizable and more
information given when batch processing.


Version 2.6.0 2017-05-12
========================
Update front end to Qt5. Output to EMF and TIF. Copy to clipboard. Update
to latest draft of DMRE. Usual bugfixes.


Version 2.5.1 2017-04-03
========================
Numerous bugfixes, especially with Data Matrix thanks to extensive testing
by brunt@SF


Version 2.5 2016-11-13
======================
Support for DotCode and Han Xin code. ECI code processing. Output to BMP, GIF
and PCX. Added bold and small text options. Reintroduction of Codablock-F.
Many minor fixes and improvements.


Version 2.4.3 2011-05-16
========================
Includes minor bugfixes


Version 2.4.1 2011-04-19 & 2.4.2 2011-05-04
===========================================
A whole host of bugfixes including correction of ECC routines
for Code-1 and addition of batch processing at the command line.


Version 2.4 2010-09-13
======================
Built extensions to the API for integrating with glabels with thanks to
Sam Lown and Jim Evins. Added code optimisation and input from stdin thanks to
Ismael Luceno. Reinstated escape character input. Simplification of Barcode
Studio.


Version 2.3.2 2010-05-29
========================
Corrected many bugs in GS1 DataBar Extended thanks to the careful
study of the code by Pablo Orduña at the PIRAmIDE project. Similarly corrected
some bugs in Maxicode thanks to Monica Swanson at Source Technologies. Also
minor bugfixes for ISBN and Aztec Code, and added some small features like a
--square option in the CLI.


Version 2.3.1 2010-04-07
========================
Removed Codablock-F. Redesigned scale function so that human readable
text and Maxicode symbols can be scaled consistently. Corrected encoding bugs
with Code 128/Code 16k and Data Matrix ECC200 ECC 050. Added --notext option to
CLI.


Version 2.3 2009-11-23
======================
Fixed problems with Micro QR Code and rebuilt QR Code support removing
dependence on libqrencode. Improved Kanji character support for QR Code and
Micro QR Code which now auto-detects and automatically converts to Shift-JIS.
Added Grid Matrix symbology with Kanji character support and automatic
conversion to GB 2312. Removed no_qr compile option. Advanced Barcode Studio
version number to match library version number.


Version 2.2.2 2009-09-29
========================
A beta release previewing the new API structure. Better NULL character
support with "nullchar" value removed. Added loading from file and sequence
dialogs in Barcode Studio.


Version 2.2.1 2009-08-06
========================
Data encoding bugfixes for Aztec Code, Data Matrix ECC200, USPS One
Code and PDF417. Symbol plotting bugfixes for MicroPDF417 and 2D components of
composite symbols. Text formatting bugfix for Qt renderer and a couple of
compiler fixes for MSVC PNG image output.


Version 2.2 2009-07-18
======================
Added Code One and GS1 support in Code 49. Changed GUI binary name to
zint-qt and brought GUI up to version 1.0. Made some minor bugfixes to Code 39,
ITF-14, Aztec Code, Code 128 and Code 16K. Added 'rest' button to GUI. Included
.spec file from Radist.


Version 2.1.4 2009-06-19
========================
Many stability improvements including removal of buffer overruns in
Code 39, LOGMARS, PZN, Aztec Code and Composite CC-A. Addition of files for
compiling on MS Windows platform - tested successfully on XP and Vista.


Version 2.1.3 2009-05-19
========================
Many improvements to the QZint GUI which is now renamed "Zint Barcode
Studio 0.2". Added Japanese Postal Barcode, Code 49 and Channel Code and made
corrections to Data Matrix ECC200 (Binary mode data compression terminates too
soon), Aztec Code (Bug when automatically resizing after removing "all 0" and
"all 1" codewords) and Code 128 (Extended ASCII characters become corrupt).


Version 2.1.2 2009-03-01
========================
Added SVG output option. Improved Japanese character support including
Unicode > Shift-JIS capability. Bugfixes for Data Matrix ECC200 (missing
characters at end of string) and Codablock-F (K1/K2 check digit and row
indicators above row 6).


Version 2.1.1 2009-02-10
========================
Minor Data Matrix ECC200 bugfix and added HIBC options.


Version 2.1 2009-01-31
======================
Reinstated Korea Post barcodes, harmonised bind and box options, moved
Unicode handling into backend and added input_mode option, added size options
to Data Matrix ECC200, added NULL character handling for Codablock-F, Code 128,
Code 16k, Extended Code 39, Code 93, Telepen, Maxicode, Data Matrix ECC200 ECC
200, PDF417 and MicroPDF417. Added GS1 support for Code 16k, Codablock-F and
Aztec Code. Added scale and direct to stdout options. Rebult Data Matrix ECC200
ECC 200 encoding algorithms to support NULL encoding and GS1 data encoding.


Version 2.0 2008-11-18
======================
Made corrections to Aztec Code and tested output with bcTester. Added
Aztec Runes, Micro QR Code and Data Matrix ECC200 ECC 000-140. Updated e-mail
information.


Version 2.0 beta r2 2008-10-19
==============================
Many corrections and bugfixes. (Code 11, Code 128, EAN-128,
Aztec Code, Codablock-F, Code 16k, POSTNET, PLANET, NVE-18, PZN, Data Matrix
ECC200, Maxicode and QR Code)


Version 2.0 beta 2008-09-29
===========================
Added support for Aztec Code, Codablock-F, Code 32, EAN-14 and DAFT
Code. Rearranged symbology numbers to match Tbarcode v8. Corrected a never
ending loop bug in EAN-128.


Version 1.6.2 2008-07-28
========================
Added KIX Code support and PNG image rotation. Corrected a bug
affecting extended ASCII support in Code 128 and Code 16k.


Version 1.6.1 2008-07-08
========================
Major restructuring of PNG generating code: Now draws UPCA and EAN
symbols properly and puts human readable text into the image. Also corrected
some nasty 'never ending loop' bugs in Code 128 and check digit bugs in PostNet
and Planet.


Version 1.6 2008-04-22
======================
Data Matrix ECC200, Maxicode and Australia Post now use common
Reed-Solomon functions – this also fixes a bug in Maxicode error correction and
replaces the last of the Lien code. Added PNG output for Maxicode symbols.
Removed some useless code. Updated QR support for libqrencode v2.0.0.


Version 1.5.5 2008-03-09
========================
Added composite symbology support. Corrected errors with GS1-128 and
PDF417/MicroPDF417 byte processing. Transferred licence to GPL version 3.


Version 1.5.4 2007-11-26
========================
Added GS1 DataBar (Reduced Space Symbology) support.


Version 1.5.3 2007-10-10
========================
Made huge corrections to Maxicode support by removing and re-writing
much of John's code. Maxicode now supports extended ASCII and modes 4, 5 and 6.


Version 1.5.2 2007-09-26
========================
Added extended ASCII support to Code 16k. Corrected Code 128 error.
Added Maxicode support by integrating code by John Lien.


Version 1.5.1 2007-09-03
========================
Added formatting code to EPS output of EAN and UPC symbols according
to EN 797:1996. Checked against and, where appropriate, altered or corrected to
comply with ISO 16388 and ISO 15417 including Latin-1 support. Altered default
image settings, added automatic ITF border. Corrected error with USPS OneCode.
Tidied up Code 39 quite a bit, added Mod 43 options.


Version 1.5 2007-08-12
======================
Pulled everything together to make an API. Corrected errors with EAN-13,
PDF417 and LOGMARS. Added EPS output. Added QR Code support using libqrencode.
Corrected ISBN verification error. Re-compiled documentation in HTML form. Put
in place proper error handling routines. --font option removed. Encoding is now
done with a restructured zint_symbol structure. Added make install option and
optional QR Code support to Makefile. Corrected minor problem with 4-State
Codes. Restructured code into fewer source code files. Added MicroPDF417
support.


Version 1.4 2007-06-20
======================
Added NVE-18 support. Corrected some problems with compilation and input
verification. Command line option handling now uses getopt(), and all the
switches have changed. Added –font option.


Version 1.3 2007-06-13
======================
Supports USPS OneCode and LOGMARS. Brought all usage information into
one User Manual document.


Version 1.2 2007-05-28
======================
Supports Data Matrix ECC200 (by absorption of IEC16022 code by Stefan
Schmidt et al). Added reverse colours, FIM, MSI/Plessey Modulo 11 and Modulo
11/10. Corrected Code 16k check digit calculation.


Version 1.1 2007-04-26
======================
Added more derivatives (Code 2 of 5 Matrix, IATA and Data Logic,
Truncated PDF417, Deutsche Post Leitcode and Identcode, Pharmazentralnummer,
Planet) and Flattermarken. Tidied up 2 of 5 code.


Version 1.0 2007-04-20
======================
Corrected problem with escape character codes. Supports PDF417. This
completes the list of features I originally wanted (plus a few more), hence
skip to version 1.0.


Version 0.6 2007-04-01
======================
Added Plessey and some derivative codes (EAN-128, Code 128 subset B,
Auspost Reply, Auspost Routing, Auspost Redirect, ITF-14). Tidied up code
again: separated symbologies into more files and put all lookup tables into
arrays (much reducing the amount of code, especially for Code 39e and Code 93).
Errors now output to stderr. Added proper input verification. Distribution now
packs with HTML pages instead of separate README. Outputs to PNG. Outputs
colour. User variable whitespace and border width. Box option. Fixed EAN add-on
bug. Added whitespace and height options. Project name changed to Zint to avoid
conflict with extant trade name. Added escape character input.


Version 0.5 2007-02-28
======================
Added Australia Post 4-State Barcodes and Pharmacode (1 and 2 track).
4-state codes now draw with correct height/width ratio.


Version 0.4 2007-01-15
======================
Added barcode stacking (now stacks up to 16 barcodes) and Code16k (stub).


Version 0.3 2006-12-30
======================
Added MSI/Plessey Mod 10 check and 2 x Mod 10 check options, Telepen
ASCII and Telepen numeric, Postnet, RM4SCC. Code has been tidied up quite a
bit. Bind option added.


Version 0.2 2006-12-12
======================
Added Code 128 (which is now the default), Code 11, Code 2 of 5, Add-on
codes EAN-2 and EAN-5 parity and MSI/Plessey without check digit.


Version 0.1 (as Zebar) 2006-11-13
=================================
Draws UPC-A. UPC-E, EAN-8, EAN-13, Interlaced 2 of 5,
Codabar, Code 39, Extended Code 39 and Code 93 barcodes and Add-on codes EAN-2
and EAN-5 without parity.