0.9.17

• Fixes a potential timing attack on the implementation of scalar multiplication on EC (many thanks to Ryad Benadjila for pointing it out to us!)
• It is possible to customize the quick emoji button of the new composition view, both globally and for each discussion.
• The fluidity of the new discussion screen is improved.
• Since Olvid will soon drop support for iOS 11 and 12, a new alert recommends users using an old iOS version to upgrade to the latest one.