Release 3.7.5

Fix FirebaseFree build
Dependency updates
Ad fixes

Release 3.7.4

Update Italian translation thanks to @unbranched
Dependency updates
Ad fixes

Release 3.7.3

Revert Ktor to 1.6.0 as 1.6.1 crashes on Android 21-23

Release 3.7.2

Update Poland translation thanks to Waldemar Stoczkowski @WaldiSt
Ad placement update
Dependency updates
Bug fixes

Release 3.7.1

Bug fixes

Release 3.7.0

Google AdMob added (FirebaseFree build is AdFree also)
Dependency updates
Bug fixes

Release 3.6.4

Translation update, thanks @mezysinc
Dependency updates

Release 3.6.3

Bug fixes
Dependency updates

Release 3.6.2

Bug fixes

Release 3.6.1

Increase max pin size to 6 digits
Add IP address blocking
Update Chinese translation, thanks to sr093906