FIX the convert and transfer mechanisms with catalina/ios13.

[cfwdman]

When I bought DASH in August'19 the main argument for dash was to use it on my ipad side by side with my mac as the reference: Hence the purchase for dash for macOS was mainly done (and would not have been necessary) to convert the Apple API Documentation.

With Catalina and iOS 13 it is currently not
a) not possible to convert the Apple API Documentation - no file is generated
b) not possible to transfer the (converted in march) docsets to the iPad.

I am very diappointed by both facts. This is not what I consider a professional support for a paid application.
To discontinue the iOS Version I consider a mistake! Apple and others are and will be moving more and more development tools to the iOS/iPadOS Devices so why this lack of support from dash?

Moreover I am even more disappointed that there's a paid upgrade to 5.0 for users which purchased before 9/1/19 which is LESS than a YEAR ago. That's nothing I can recommend given the current maintenance of the projects.