Moved helper functions to own module
Moved pretty unpack
fixed a bug in get_fat_chain and moved to module
added git ignore to git
Added the FAT32 file i use for testing
added a few crude test cases for the read_fat_chain function, i realy should use doctest
added a notice about the testfat
started converting the parse_directory functions to an object-model
fixed the read_dir method
added a note on using sparse files for the disk-image
added crude test for reading fo root
removed unneccesary potentially dangerous file-opening
added main-guard
added check that the moohfile is on sector 39
Started work on function to get deeper dirs.

Wrote function skeleton and test-case for trivial base-case (requesting
the root)
added files to the subdirectory, by the magic of luck none of the other test-cases broke.
switched all tests to doctest
added error reporting when target-directory does not exist