Additions

Added zoom controls to image files with corresponding keyboard shortcuts.
Added buttons to the settings help section to open the website and GitHub repository.
Added tooltips to various parts of the app, including some that were missing.
Added support for colour themes:
- Bundled theme extensions now sort into groups in the themes settings section.
- Theme accent colours are now properly functional.
Added a dialog to show keyboard shortcuts to the Help section in Settings.

Changes

Improved autosave timer from 2 seconds to 300ms.
Links within the editor now require a Ctrl + Click to open.
Made the improved RPC show language based off language name instead of .kox extensions.

Attempted fix at marketplace loading issues.
- Switched the extension index source from raw.githubusercontent.com to the GitHub Contents API, which has more generous rate limits for unauthenticated requests.
- Added the application/vnd.github.raw+json Accept header so the Contents API returns the index as plain JSON directly.
- Added a per-request timeout to icon fetches so a stalled download can no longer hold the marketplace on "Refreshing..." indefinitely.
Added a missing pipe separator to the status bar on images.
Tightened error logging in crash.log.
Improved cursor handling in the editor.
Fixed misaligned elements in the status bar and in buttons across the app.
Fixed the top window title bar not updating correctly.
Fixed Installed Theme Extensions cutting off themes when more than 3 were added.
Improved home screen card heading consistency:
- Removed exclamation marks from "Get Started" and "Visit the Marketplace" headings.
- Unified card heading font sizes to 24px across all three cards.

Full Changelog: v1.0.3...v1.0.4