Log Message:
zxing-cpp: update to 2.0.0.

The most visible change from the client perspective is the removal
of all formerly deprecated API, (almost) completing the 'cleanup'.
Since I was way too slow with this release to implement a 'cleanish'
SemVer release as discussed in #333, I decided to release this 2.0
with SONAME 3. A 3.0 release might bring the major version number
back in sync with the SONAME.

Major Changes

    switch to UTF8 based API and remove deprecated UTF16 one (Result::text())
    remove all API deprecated in 1.4
    Adding a wrapper for iOS by @parallaxe in #337
    new Aztec detector implementation to support arbitrary rotation and position \ 
of the symbol
    support multi-symbol detection in Aztec detector
    replace all Qt originated ECI/CharacterSet conversion code with a new \ 
implementation provided by @gitlost (libzueci)
    require c++17 to build library and client code
    new DecodeHints::textMode() and Result::text(TextMode) API to specify how \ 
bytes are rendered into text.
    HRI (human readable interpretation) is the new default for the TextMode (has \ 
been for most cases before, but not all)
    new DecodeHits::tryInvert() feature to test for inverted symbols (white on \ 
black background)

Minor Changes

    deprecate TextUtfEncoding helpers, not required anymore with UTF8 APIs for \ 
both reader and writer
    support for multi-symbol and arbitrary position detection of DataMatrix \ 
symbols when library is built with c++20
    Include version number of QR Code and DataMatrix in Result by @markusfisch \ 
in #396
    reduce size of Result struct by about a third
    cleanup all license related files (see removal of the Qt code above)
    update links and comments to refer to new github.com/zxing-cpp/zxing-cpp home
    improved Code128 decoder for over/underexposed images
    support python 3.11
    a whole bunch of fixes and minor improvements all over the place