Log Message:
print/foliate: Updates to 2.4.0

Changes since 2.3.0:

Changes:

  * Improved metadata display
  * Improved FictionBook rendering
  * Improved UI for acquiring books from OPDS (#404, #405)
  * Fixed unique identifier extraction for EPUB files
  * Fixed missing window icon (#456)
  * Fixed TTS environment variables not set when using Flatpak
  * Fixed eSpeak NG voice not selected when testing TTS configuration
  * Fixed wrong __ibooks_internal_theme attribute when "Invert" is
    enabled

Technical changes:

  * Foliate no longer depends on libsoup (gir1.2-soup-2.4 on Debian based
    distributions). Previously, it was an optional dependency for opening
    remote files.