v2.16.6

Fixes and improved performance.

Full Changelog: v2.16.5...v2.16.6

Due to Google Play restrictions, starting with this version, the app distributed on Google Play will now use the new app bundle format and therefore mandatorily signed by Google. To check code consistency and integrity, code transparency is supported. SHA-256 fingerprint of the code transparency key certificate (must be compared with the developer's public key manually): C8 70 92 46 B3 32 22 6F 33 57 05 B4 5C 37 83 81 65 67 42 44 1B DC CC B2 96 1B 66 4D CF 4C 74 BC