Zulip: äldre versioner att ladda ner

Enhancements:
- Updated translations.
- The Linux AppImage no longer requires the end-of-life FUSE 2 library.
Dependencies:
- Upgraded all dependencies, including Electron 45.1.0.
Fixes:
- Fixed garbled unread badge in the Linux tray icon at non-1x display scaling.

Fixes:
- Fix launch failure with Linux Snap package.

Enhancements:
- Updated translations, including new languages Estonian, Hebrew, Norwegian, and Norwegian Nynorsk.
- The Linux Snap package has been updated with native Wayland support.
Dependencies:
- Upgraded all dependencies, including Electron 42.5.0.
Fixes:
- Fixed sorting of languages in the spellchecker languages setting.

Enhancements:
- Adjusted text contrast in settings panel.
- Updated translations.
Dependencies:
- Upgraded all dependencies, including Electron 39.2.7.

Fixes:
- Corrected broken translations in Chinese (simplified), Finnish, German, Greek, and Tamil that crashed the app.

Enhancements:
- Enabled macOS Writing Tools in the context menu.
- Marked untranslated strings for translation.
- Updated translations.
Dependencies:
- Upgraded all dependencies, including Electron 37.4.0.

Enhancements:
- Updated the icon in macOS with a native appearance.
- Marked untranslated strings for translation.
- Updated translations.
Dependencies:
- Upgraded all dependencies, including Electron 35.0.1.
Removed features:
- Removed support for macOS 10.15 and earlier, which reached end-of-life in 2022 and is no longer supported by Electron.

- Fixed an error in the third-party gatemaker library that broke the display of notifications for completed downloads.
- Upgraded all dependencies, including Electron 25.8.4.

- Downgraded Electron to 25.8.1 to avoid a renderer process crash on Linux.

- Upgraded all dependencies, including Electron 26.2.1.

- Removed support for Windows 8.1 and earlier, which reached end-of-life earlier this year and are no longer supported by Electron.
- Removed support for Zulip Server 3.x and earlier, which have been obsolete for more than 18 months, in accordance with our release lifecycle.
A notice will now be displayed when connecting to a server with an unsupported version.
- Fixed display of the dropdown for the spellchecker languages setting.
- Fixed various bugs related to displaying and updating organization icons.
- Fixed settings to disable visual display of notifications.
- Upgraded all dependencies, including Electron 24.2.0.

Fixes:
• Fixed a hang on startup when an organization cannot be connected at startup.

Enhancements:
• Enabled Chromium sandboxing in remote renderer processes for improved security hardening.

Dependencies:
• Upgraded all dependencies, including Electron 22.2.0.

Fixes:
• The com.apple.quarantine extended attribute is now correctly set for downloaded files on macOS.
• The external link handler ignores invalid URLs.

Dependencies:
• Upgraded all dependencies, including Electron 22.0.0.

Fixes:
• Fixed a bug in the automatic updater that would sometimes close the application instead of updating it.
(As with most updater fixes, this fix will take effect when updating from 5.9.3. If you're having trouble updating to 5.9.3, a workaround is to click Install Later rather than Install and Relaunch, then Quit from the menu bar and re-open the application manually.)

Dependencies:
• Upgraded all dependencies, including Electron 18.2.0.

Dependencies:
• Upgraded all dependencies, including Electron 18.1.0. This fixes an upstream Electron bug that crashed the application when accessibility tools such as screen readers and grammar assistants are in use.

Dependencies:
• Upgraded all dependencies, including Electron 18.0.3.

Fixes:
• Fixed unread count display when viewing a topic with a parenthesized number.
• Fixed parsing of system proxy settings.

Enhancements:
• Removed fade-in animation on page load.

Dependencies:
• Upgraded all dependencies, including Electron 18.0.1.