Version 3.6

1. When deleting the last empty line in the MRU buffer, use the black hole (_) register.
2. Set the filetype option for the MRU buffer to 'mru'.
3. When comparing strings, use '==#' instead of '==' to match case.
Version 3.7

1. Use the fnameescape() function (if available) to escape special characters in file names.