Added some shortcut keys for the preview function (Patreon)

Starting from version 16.7.0, when you preview a work using the downloader, you can press the B key to bookmark the work. In addition, you can also use the arrow keys to switch images, which is useful for users who use touchpads, because the downloader previously only supported using the mouse wheel to switch images, but this is difficult to operate on touchpads.

Now, when you preview work, you can use these shortcut keys:

B(ookmark) Bookmark previewed work

C(urrent) Download the currently previewed image

D(download) Download the currently previewed work

Esc Close preview

← ↑ Previous image

→ ↓ Next image

Space bar Next image