- CODABLOCKF: fix misencodation of extended ASCII 0xB0-0xB9 when

followed by digit (ignore 2nd byte of FNC4 when categorizing
  Code C characters)
- New `ZBarcode_Cap()` flag `ZINT_CAP_BINDABLE`, differentiated
  from `ZINT_CAP_STACKABLE`, and new Qt Backend method
  `isBindable()`
- CLI: fix `separator` check to use new `ZINT_CAP_BINDABLE` instead
  of `ZINT_CAP_STACKABLE`
- ZBarcode_Cap: add missing symbologies to `ZINT_CAP_BINDABLE` (was
  `ZINT_CAP_STACKABLE`)
- DOTCODE: pad rows if given number of columns instead of failing
  if rows below min (5)
- DBAR/composites: ensure stacked symbologies and composites are
  not stacked (set `symbol->rows` to 0)
- test suite: move `test_perf` routines into single test
  "test_perf";
  new "test_random" (based on "test_bwipp") to test various
  symbologies with random binary - discovered CODABLOCKF bug;
  expand "test_bwipp"
manual: Feeback: mention AZTEC -1 meaning min & MICROPDF417:
  doc new `ZINT_CAP_BINDABLE`
general: various code fiddlings and re-formattings

docs/manual.pmd

@@ -1,6 +1,6 @@
 % Zint Barcode Generator and Zint Barcode Studio User Manual
 % Version 2.15.0.9
-% March 2025
+% April 2025
 
 # 1. Introduction
 
@@ -2607,7 +2607,8 @@ Value                       Meaning
 -------------------------   --------------------------------------------------
 `ZINT_CAP_HRT`              Can the symbology print Human Readable Text?
 
-`ZINT_CAP_STACKABLE`        Is the symbology stackable?
+`ZINT_CAP_STACKABLE`        Is the symbology stackable? Note that stacked
+                            symbologies are not stackable.
 
 `ZINT_CAP_EANUPC`[^14]      Is the symbology EAN/UPC?
 
@@ -2622,6 +2623,7 @@ Value                       Meaning
 `ZINT_CAP_DOTTY`            Can the symbology be outputted as dots?
 
 `ZINT_CAP_QUIET_ZONES`      Does the symbology have default quiet zones?
+                            Note that default quiet zones may be zero.
 
 `ZINT_CAP_FIXED_RATIO`      Does the symbology have a fixed width-to-height
                             (aspect) ratio?
@@ -2636,6 +2638,10 @@ Value                       Meaning
 
 `ZINT_CAP_COMPLIANT_HEIGHT` Does the symbology have a compliant height
                             defined?
+
+`ZINT_CAP_BINDABLE`         Does the symbology have row separators that can be
+                            set? Includes stacked symbologies and stackable
+                            linear symbologies.
 ------------------------------------------------------------------------------
 
 Table: {#tbl:api_cap tag=": API Capability Flags"}
@@ -2671,8 +2677,9 @@ In particular for symbologies that have masks,[^15] `option_3` will contain the
 mask used as `(N + 1) << 8`, N being the mask. Also Aztec Code will return the
 actual ECC percentage used in `option_1` as `P << 8`, where P is the integer
 percentage, the low byte containing the values given in Table {@tbl:aztec_eccs}
-(with the addition of `0` meaning less than 5% + 3 codewords). Micro PDF417 also
-will return the ECC percentage in `option_1` as `P << 8`.
+(with the addition of `0` meaning less than 5% + 3 codewords and `-1` meaning
+minimum 3 codewords). Micro PDF417 also will return the ECC percentage in
+`option_1` as `P << 8`.
 
 Detailed feedback on the data encoded may be requested by specifying the
 `BARCODE_RAW_TEXT` option in the `output_options` member, which will populate
@@ -2765,7 +2772,7 @@ check digits are added by default. To add just one check digit, set `--vers=1`
 ### 6.1.2 Code 2 of 5
 
 Code 2 of 5 is a family of one-dimensional self-checking symbols, 8 of which are
-supported by Zint. Note that the names given to these standards alters from one
+supported by Zint. Note that the names given to these standards alter from one
 source to another so you should take care to ensure that you have the right
 barcode type before using them.
 
@@ -4674,7 +4681,7 @@ Structured Append]) (API `structapp`). The ID ranges from 0 (default) to 255.
 --gs1`](images/dotcode.svg){.i2d}
 
 DotCode uses a grid of dots in a rectangular formation to encode characters up
-to a maximum of approximately 450 characters (or 900 numeric digits). The
+to a maximum of approximately 1220 characters (or 2940 numeric digits). The
 symbology supports ECI encoding and GS1 data encoding. By default Zint will
 produce a symbol which is approximately square, however the width of the symbol
 can be adjusted by using the `--cols` option (API `option_2`) (maximum 200).