Release 0.4.0

The original iPodderX layout (toolbar, places, item table, Files pane),
the Classic theme, Directory and Popular, All Subscriptions with mark
everything read, sortable columns and a Size column, one meaning per
icon across the UI, and fixes for the double play, Escape in dialogs,
the dark-theme password box and paid feeds listed in Popular. See
CHANGELOG.md [0.4.0] and docs/history.md.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0173mGu6rK18Ne7UGTwAaVJV

CHANGELOG.md

@@ -10,6 +10,8 @@ The long form, with what was wrong before and how it was found, is in
 
 ## [Unreleased]
 
+## [0.4.0] - 2026-09-11
+
 ### Added
 
 - A Classic theme after the 2004 Mac app, beside Dark and Light: brushed-metal toolbar, Aqua
@@ -197,7 +199,8 @@ The long form, with what was wrong before and how it was found, is in
 - Torrent enclosures through librqbit, seeding to a ratio or a time, with a stall timeout.
 - `ipx import` and `ipx export` for OPML, and systemd units in `contrib/`.
 
-[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.3.0...main
+[unreleased]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.4.0...main
+[0.4.0]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.3.0...v0.4.0
 [0.3.0]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.2.0...v0.3.0
 [0.2.0]: https://git.sdf1.net/rays/ipodderx-rs/compare/v0.1.0...v0.2.0
 [0.1.0]: https://git.sdf1.net/rays/ipodderx-rs/releases/tag/v0.1.0