Cemu: download ældre versioner

Changelog:
- Exporting saves via the title manager no longer crashes when the export path contains unicode characters
- Fixed a regression in DS Virtual Console titles (#1440)
- Fixed a bug where the debug shader dumping option would try to write files to the wrong directory
- Added a right-click context menu to the PPC debugger disassembly view and fixed some smaller bugs in the debugger
- Use libusb as the backend for HID/USB devices on Windows (#1471)
- Reduce amount of Vulkan sampler objects that are created. Reduces memory usage slightly and avoids crashes on drivers that have a low limit on sampler objects
- Improved index data caching on Vulkan. This may provide a very small performance benefit in some games
- The --force-interpreter command line option now always uses single-threaded CPU emulation like originally intended