- make Sequence Format textbox bigger (on own line)
- suppress question mark in Windows dialogs
AUSPOST: more standard error messages
backend: add & use z_isdigit/upper/lower() macros
docs: 20-bit Unicode -> 21-bit Unicode
and set Escaped flag; fix tooltip that they're converted to spaces;
sequence dialog: re-organize to put Create Sequence stuff only in groupbox
and put Import -> From File and Clear at bottom, similar to data dialog;
mainwindow: use new Escaped flag from data dialog and set checkbox and
statusbar message accordingly
and restrict sequence to max 10,000, add button icons;
make Export dialog sizable and show every 100 results, add button icon;
fix saving CHANNEL option, fix Export painting main window (Windows), fix
guard descent not-resetting
qzint: add getAsCLI(), warnLevel(), extra isStackable()/isComposite() etc
Add ZBarcode_BarcodeName()
manual: doc above, some fixes, tweaks
