Fixed bugs for saving files so it now appears to work for native file system, .PRG files. Works with replace mode using @ character. Write and read progress improved. UI is now rearranged again with splitter between the dirlist and image directory. Splitter is persistent. Improved global defines for arduino side and some code cleanup. Added a nice binary logger that can be used for debugging on the PC side. C64 cursor in dirlist is now hidden while reading or writing data, just like the CBM.