iOS 2.31

New:
 — Option to lock the app with Touch ID and Passcode
 — Private EXIF meta data like location and creation time is deleted from sent photos

Improved:
 — Like messages from push notifications
 — Like images in full screen view
 — Delete pictures, videos or links directly from the Search view
 — Larger tap area to open shared files. Whole message is now tappable.

Fixed:
 — Sharing links from other apps sometimes did not create a link preview
 — Sometimes @username was not shown for search results
 — Some URLs were broken by link preview
 — Crash issues on iOS 8.3 and 8.4
 — Number of calling related bugs