Threema 7.4 for iOS

Added an alphabetical index scroller to the contact list when starting a new chat
Added swipe actions for search results in the contact list
Improved audio controls in calls, voice messages, and media playback
Improved Threema calls and features related to Threema 2.0 for desktop
Fixed a bug that caused a warning about multiple connections to be shown incorrectly
Fixed a bug that prevented the typing indicator from disappearing
Fixed various bugs and crashes in relation to calls
Other improvements and various bug fixes
Note: Starting with the next major app version, iOS 17 will no longer be supported