Log Message:
sysutils/felix: update to 0.8.0

new feature:
   u to undo and Ctrl + r to redo #51 76e8444
       Targets of these new commands are put/delete/rename.

fix:
   Clarified the type of error during initial setup (now explicitly use panic).
   Added minimum row size.
   Better cursor move when terminal size is extremely small (row size < 8).