v0.4.4

Emulation changes:

• Fix sprites being culled while still one pixel on-screen at the right.

Frontend changes:

• Add option to save VRAM to file.
• Fix barebones file save dialog not working at all.
• Fix broken scaling on macOS and Linux.
• Add drag-and-dropped files to the Recent Software list.
• Optimise debug menus while the emulator is paused.
• Make ALT+ENTER toggle fullscreen.
• Fix various instances of stuck inputs.
• Add a Windows executable icon.