Zxing

- Retire Symbian port
- Retire C port
- Improved PDF417 decoding, including macro PDF417
- Added Aztec and Data Matrix encoders
- Added RSS Expanded decoder
- Java, C++ and iPhone build system updates, including migration to Maven for most Java modules
- Many small fixes and improvements
- Many small updates to the Android app, Barcode Scanner, including rare bug fixes and translation updates.
The 2.2 release corresponds substantially to v4.3.2.
- Update zxing.org web-based decoder for Amazon Elastic Beanstalk (and redeployed there)
- Many ports of Java updates to C++ and C ports
- Standardize test system image processing and image format for reproducibility

- Many small fixes to handling of QR code data formats, like exotic URLs, and contact info
- Many small fixes to decoding and detection common barcode formats, like PDF417, Aztec. Small improvements
too like partial error correction for PDF417
- Many small updates to the Android app, Barcode Scanner, including rare bug fixes and translation updates.
The 2.1 release corresponds substantially to v4.3.1.
- Many ports of Java updates to C++ port

- core/ has been rewritten to work with Java 6
- core/ has new functionality:
- PDF 417 encoding (from Barcode4J)
- Codabar encoding
- partial Maxicode decoding support
- android/ and androidtest/ have been rewritten to work with Android 2.1+
- Uses new camera APIs
- Uses new contact APIs too
- (See separate Barcode Scanner release notes for version 4.0)
- zxing.appspot.com/ has been rewritten to work with GWT 2.4
- cpp/, objc/ and iphone/ have received many ports of fixes and other functionality from Java, and changes to work with more recent iOS
- bug/, rim/, and javame/ have been removed
- Many, many small bug fixes and optimizations, mostly to core/ and android/

- Initial support for Aztec codes
- Added the ability to read rectangular DataMatrix codes
- Added new lengths for ITF
- Dozens of bug fixes to core decoding routines
- New C port
- Android app:
- Tablet support
- Many translations added and updated
- Support for new Intent parameters
- Many bug fixes and small features
- Mostly rewritten iPhone port
- New ZXingWidget library to include scanning in any iOS app
- Made CommandLineRunner multithreaded and recursive

- Many, many updates to C++, Symbian, iPhone ports
- RSS 14, Expanded support
- Code 93 support
- Codabar support
- Data Matrix support reaches release quality
- UPC/EAN +5 extension support
- Android app:
- Share history support
- Bulk scan mode
- Wi-fi configuration support
- Format available in callback for web-based integration
- Updated or new translations for:
Hungarian, Danish, Chinese, Arabic, Dutch, Slovenian, Turkish
- UI beautification
- Added ability to detect multiple barcodes per image
- Many small bug fixes and enhancements

- Android app:
- Shopper integration
- Tries to activate front light on some devices
- Xperia et al. support with new screen sizes
- Translations: Dutch, Swedish, Czech, Finnish
- "Thinking" visualization
- Updated C++ port, including new Data Matrix port
- Updated C port
- Preliminary RSS-14 support
- Reconceived support for various image sources and thresholding
- Other small bug fixes and performance improvements