There have been nearly 800 commits that touched about 10k lines of code
since the last release.
Here are the highlights/major changes:
* switch to C++-17 (client code can still be compiled with a C++-11
compiler)
* switch to the reimplemented 1D detectors (about 5x faster than old
ones in false-positive use case)
* deprecate the use of ResultMetadata, see ZXingReader.cpp as an
example
* completely new Android wrapper library with CameraX support,
integrated build system and demo app
* a lot faster and more capable isPure detection for all 2D codes
* completely new QRCode reader (faster, better support for rotated
symbols)
* new BarcodeFormat names (old ones still available but deprecated)
* new ZXingQtCamReader demo app based on QtMultimedia and QtQuick
* reduced false positive rate for UPC/EAN barcodes + improved Add-On
symbol handling
* 20% faster ReedSolomon error correcting
* PDF417 is faster and supports flipped symbols
* DataMatrix: added DMRE support
* much improved python wrapper incl. PyPI module for easy pip
installation (thanks to antoinehumbert)
* proper ECI handling in all 2D barcodes (thanks to gitlost)
* added Structured Append support for DataMatrix, Aztec and MaxiCode
(thanks to gitlost)
Note: The next release will drop support for a number of deprecated
APIs. Please update your code and fix all deprecation warnings now.