added basic scene navigation
delete threads and npcs
add threads and npcs
added documentation for mythic-complete-rank
renamed function mythic-complete-rank to mythic-read-rank
moved all rank function together
include shortcut key for any rank and fixed any function accessing the data structure
renamed mythic-ask-grade to mythic-read-grade and fixed error
multiple choice selection for ranks
removed key seqs to enter odds directly, same functionality is now integrated in C-c C-o and C-c C-r
removed unnecessary let in mythic-read-rank
only accept existing choices in mythic-read-rank