Changes since the last release:
- fixed clipboard paste not working on boot screen.
- fixed broken Windows shell path auto-complete.
- fixed various issues affecting initial SDL window size
- improved portability of window position/size saving.
- improved validation of ZX82 ROM containers.
- moved samdos2 dosboot image to external resource file.
- added support for older SAM ROM images (#77)
- added manual play/pause to Win32 tape browser (#77)
- added missing tape auto-load triggers.
- added fast boot frame limit for broken or custom ROMs.
20220413: macOS package rebuilt to restore 10.15 (Catalina) support.