Version 1.3 * use cert4android [https://gitlab.com/bitfireAT/cert4android] instead of MemorizingTrustManager * add network security config to manifest so that user-installed CAs will be accepted in Android 7 again * new app-wide setting: distrust system certificates * accept intent extras for LoginActivity (for integration with Nextcloud app) * clean up permissions for account management * vcard4android: fix bug concerning generated formatted postal addresses * new launcher logo (thanks to Christoph Scheidl) * minor optimizations and bug fixes