49.alpha - 2025-08-31

New Features:
  * New command-line option --new-window (#189)
  * Use appstream for appdata validation test
  * Add shortcuts for numeric tab indices (#211)

Fixes:
  * Select all text in entry when opening search
  * Set shortcuts window transient for the main window
  * Set dialogs as modal to prevent interaction with main window
  * Put each main window into its own group for better dialog experience
  * Fix margin in Preferences dialog
  * Fix undo/redo shortcuts in docs (#208)
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