Fixes an issue when negating the result of a calculation ( for example to use the negated value for another calculation).

- Bugfix: When storing a number (which was directly entered and not the result of a calculation) to the memory it was not possible to immediately enter a new number. The existing number was extended instead. This is now fixed.

- Better adjustment to the different rounded window corners under iPadOS 18 and older, 26 and newer and macOS
- On iPad and Mac it is now possible to make windows smaller than before.

- Completely rewritten to support the latest iOS technology
- On the iPad you can use the App in windowed mode and even open multiple completely independent calculators at the same time
- There are several different Widgets for the homescreen available (a simple calculator, a scientific one and a bit/integer calculator)
- All keys which provide multiple modes can be either tapped to switch through all the available modes, or long-pressed to pick the mode from a menu directly
- All other keys can be also long-pressed to display a more detailed meaning of the key, so when in doubt what a certain key is for, you can long-press it to find out. This feature can be also switched off in the settings if you don't need it.
- The "Engineering" mode now provides much more presets for the scientific calculator. There are modes for the common metric quantity prefixes (like nano, micro, kilo, etc)
- It's possible to copy the result into the clipboard and also paste in numbers and simple calculations (+, -, / , *, ( ,) )
- Via long-press of the "Exp" key you can directly enter one of the metric quantity prefixes, for example enter "1k" (kilo) instead of 1000 or "3m" (milli) instead of 0.001

Fixes a small layout issue on the iPad