Imported Scapple board isn't displayed

[November_Sierra]

@paulcoholic Almost forgot, good news:

Fixes made to Quick Look and icon previews for compatibility with macOS 15.

Scapple for macOS Public Beta - 1.4.3

Scapple Public Beta Now Closed At this time we will be folding the beta into what will become the next official release, 1.5. This will be coming out shortly, to coincide with the macOS 15.1 release, and will include some Apple Intelligence features in supported regions. As the file format was not changed during the beta, any .scap files you created or modified with it should be safe to open in the current stable release (1.4.2). Big thanks to everyone that participated in the beta! Whether yo…