First, KyPass have a documentation ! It’s available at http://docs.kypass.eu. This website uses gitbook and you could improve documentation via GitHub if you wish.
The changelog for the v5.3 is:
Added
Year is now selectable in expiration date
Added count in shortcuts section
Added cloud provider icon in file list
Added empty trash function
Browse history entries
Added database title in the bottom bar
Allow certificates in O365 login
Fixed
Autofill function is back for ios12 users
Fix box.com sync
Fix size display for local files
Fix large file (>4mb) upload with MSGraph
Digits argument is now supported in OTP uri
Fix the UIViewcontroller bug (when the use shortcut option was not set)
The autofill function is working again (As a reminder: Settings>Passwords & Accounts>autofill). iOS 13.4 added some changes in the way this function should be implemented and had to be rewritten,
Added new parameters in password generator (ignore some letters and add password separator)
The forum is still there if you need some improvements.