sbtlTV 0.12.0

Added

Themes - Settings > Appearance: sbtl, Catppuccin, Gruvbox, Nord, Tokyo Night, Mocha, Pi and more, Caelestia (follows the desktop on Linux), an optional system accent, and a choice of typeface.
Subtitles for movies and episodes - the CC button (or V) turns them on; right-click for tracks and a subtitle delay, which is remembered per title.
Closed captions on live TV - checked before they show, so station-data garbage stays off screen.
Caption language - English, Spanish or French captions and subtitles, or follow the system.
Stream recovery - provider cuts reconnect on their own, and a stalled stream is reloaded before you see an error.

New look throughout - Settings, guide, Movies and Series, title bar and overlays restyled to the theme.
Playback problems show in a card with the actual cause and a Try again button.

A movie's resume point could be overwritten when it was started after a live channel.
macOS: closing the window left the app unable to play after reopening it from the Dock.
The guide's times did not line up with the programmes below them.
Provider usernames and passwords no longer appear in the debug log.
A link that fails to open now says so at once with the compatibility player and on Windows.
Player controls did not respond after the window reloaded.
Fewer harmless error messages, now on macOS too.

Memory use can climb during in-window playback on macOS and Linux - it mostly levels off and is released when you change channel or title. Still being watched.
Widescreen SD channels still play small on macOS.

Theme: palettes, tokens and the shtl-style screens by @thesubtleties in #112
Subtitles and live closed captions by @thesubtleties in #113
Stream reconnect, stall recovery, resume fix and caption language by @thesubtleties in #114
Release 0.12.0 by @thesubtleties in #115

Full Changelog: v0.11.1...v0.12.0