fields `raw_segs` and `raw_seg_count` instead of `text`, and to
do so for all symbologies, using new common funcs `rt_cpy()` etc.
MICROPDF417: return ECC percentage in top byte of `option_1`
DBAR_EXP_STK: return `option_2`/`option_3` feedback
CLI: change warning text "ignoring" -> "**IGNORED**"
GUI: show feedback for DBAR_EXP_STK, MICROPDF417, UPNQR
ctest: fix recent inability to run tests via "ctest" on Windows
(MSVC) by using cmake 3.22 feature `ENVIRONMENT_MODIFICATION`
manual: document feedback and RAW_TEXT in new "Feedback" section;
rephrase some symbology descriptions
test suite: new general-use arg "-a"; add `func_name` to context;
new "test_bwipp" test for testing BWIPP against ZXing-C++
also add min version to all CMakeLists.txt
GUI: add missing accelerator to UPCA/UPCEAN.ui "Guard Whitespace";
add default value to some "Default" buttons;
reformat DAFT examples again; add \^@ to special escs hint
Rename barcode funcs to same as BARCODE_XXX name
library: barcode funcs array for dispatch, used for ZBarcode_ValidID() also
general: change is_sane() comparison to nonzero from ZINT_ERROR_INVALID_OPTION
MAILMARK: fuller error messages
CODABAR: add option to show check character in HRT
zint.h: use 0xNNNN for OR-able defines
GUI: add guard descent height reset button, add Zint version to window title,
static get_zint_version() method, use QStringLiteral (QSL shorthand),
use SIGNAL(toggled()), add errtxt "popup" and status bar, add icons,
add saveAs shortcut, add main menu, context menus and actions, add help,
reset_view() -> reset_colours(), add copy to clipboard as EMF/GIF/PNG/TIF,
lessen triggering of update_preview(), shorten names of getters/setters,
simplify/shorten some update_preview() logic in switch,
CODEONE disable structapp for Version S
qzint.cpp: add on_errored signal, add missing getters, add test
