CODE128: Add new extra escape \^1 for manual insertion of FNC1s,

  ticket #324, props Jim Shank;
  also improve encodation for a few limited cases;
  also some code fiddling
BWIPP: update to latest
raster: check for overflow on `size + size2` in `raster_malloc()`
vector: put `malloc()`s on one line for grep ease
docs: pandoc-3.3, clang-tidy-20

Author: gitlost

ChangeLog

@@ -6,6 +6,7 @@ Version 2.13.0.9 (dev) not released yet
 - New `memfile` & `memfile_size` fields in `symbol` for use with new output
   option `BARCODE_MEMORY_FILE`
 - Invalid `input_mode` now returns warning
+- New CODE128-only special extra escape `\^1` for manually inserting FNC1s
 
 Changes
 -------
@@ -21,6 +22,8 @@ Changes
   iso4217: new ISO 4217 currency code 924
 - AZTEC: workaround MSVC 2022 optimizer bug in `az_populate_map()` loops,
   ticket #317, props Andre Maute
+- CODE128: Add new extra escape `\^1` for manual insertion of FNC1s, ticket
+  #324, props Jim Shank
 
 Bugs
 ----

README.clang-tidy

@@ -1,22 +1,22 @@
-% README.clang-tidy 2024-03-03
-% Current as of latest clang-tidy-19 from Ubuntu 22.04 apt package
+% README.clang-tidy 2024-09-03
+% Current as of latest clang-tidy-20 from Ubuntu 22.04 apt package
 
 Requires cmake in "build" sub-directory with -DCMAKE_EXPORT_COMPILE_COMMANDS=ON (for "build/compile_commands.json")
 and -DCMAKE_BUILD_TYPE=Debug (so `assert()`s defined), and then make (for Qt generated includes).
 
 In project root directory (warning, slow):
 
-clang-tidy-19 backend/*.c frontend/*.c backend_qt/*.cpp frontend_qt/*.cpp -p build/compile_commands.json
+clang-tidy-20 backend/*.c frontend/*.c backend_qt/*.cpp frontend_qt/*.cpp -p build/compile_commands.json
 
 For "backend_tcl", which has no "compile_commands.json", specify the tcl include directory, e.g.
 
-clang-tidy-19 backend_tcl/*.c -- -I/usr/include/tcl8.6
+clang-tidy-20 backend_tcl/*.c -- -I/usr/include/tcl8.6
 
 Options are in ".clang-tidy" (in the project root directory). The excluded checks are
 `clang-analyzer-security.insecureAPI.strcpy` (for `strcpy()`, `strcat()` etc), and
 `clang-analyzer-security.insecureAPI.DeprecatedOrUnsafeBufferHandling` (for `sprintf()`).
 
 The test suite (cmake given -DZINT_TEST=ON) can also be analysed with an additional check disabled:
 
-clang-tidy-19 backend/tests/*.c frontend/tests/*.c backend_qt/tests/*.cpp \
+clang-tidy-20 backend/tests/*.c frontend/tests/*.c backend_qt/tests/*.cpp \
 	-checks='-clang-analyzer-optin.performance.Padding' -p build/compile_commands.json