Opacity, pin and bug fix.

• added opacity options in snapshop context menu and hotkeys. (available in right click menu of each snapshot, and from Ctrl + plus/minus)
• added opacity snapshot opacity change on mouse hover (to see stuff under the snapshot without moving it, like setuna does. Set hover opacity in the main menu.)
• when reopening images from recycling bin, the old image is raised to top of the list and will take the current time.
• image is now saved to recycle bin on open instead of on close. (so that if program crash or pc is turned off, the history is not lost.)
• added pin main window to top button. (this might be occasionally useful for tablet users without an keyboard?)
• removed extra quit button in system tray icon when minimized. system tray icon now always visible (previously icon only show when main window not visible.).
• Fixed some drawing bugs. Ctrl D now can toggle drawing mode. Press esc while drawing now cancels drawing instead of closng image.

Warning: in case windows or your antivirus labels screencap as dangerous program or is virus, this is a false positive. It would be difficult for me to register the program with microsoft to be certified by windows defender, and also many anti virus program labels all bundled python executable as virus regardless of content.

2 releases compiled with different compiler is included below. nuitka_311 is preferred because it should have better performance, but in case there are any issues, try the pyinstaller_312 version instead.

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Update Mar 26 2024:

fixed bug where snapshot creates a taskbar item when regaining focus.
Recompiled nuitka version using correct params and clean environment.