flnews-snapshot: Update to 1.3.0
1.3.0 2026-01-24 Release
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Important notes:
- GUI: FLTK 1.4 is now supported.
Tested to work with Cocoa, Wayland and X11 backends (thanks to Dennis
Preiser and Martin Schnitkemper).
Glyph substitution (use of multiple fonts) is now supported for the
Wayland and X11 backends too, if compiled for Pango.
Better keyboard navigation (formerly limited by ABI of FLTK 1.3.0
shared library).
- GUI: FLTK Widget Fl_Multi_Browser is now used for the group list.
This allows to move the focus around via keyboard (without immediately
entering the next group).
- Subprojects for libraries added.
libbasexx is used as Base 64 encoder and decoder.
libssiconv, libjpiconv and libuciconv are used as iconv() replacement.
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