Maintenance release for Xcode 14

• This release makes sure the project builds with Xcode 14 without any significant warning.

Maintenance release

• The SRG Appearance library has been updated to version 5.1.0.

Maintenance release

• Update layout implementation.

Maintenance release

• Update Mantle to suppress Xcode compilation warnings.

Maintenance release

This release updates dependencies to avoid rare crashes on tvOS 15.

Improved iOS 15 compatibility

• Ensure proper readability of the account page navigation bar on iOS 15.

Font update

Font update

Font styles have been introduced for a more consistent appearance.

Minimum deployment target

The minimum deployment target has been bumped to iOS 12.

tvOS improvements

• The login button is automatically focused once the user finishes entering their information.
• Previous usernames can be quickly reused and credentials can be easily supplied via the iOS Remote app.
• Cancelled login attempts are notified consistently, as was the case on iOS.

tvOS login instruction layout fix

• Avoid login instruction message truncation on tvOS login view.
• Improve tvOS integration documentation.

Fix modal transition assertions

Fix assertion calls when presenting a modal view controller (#9).