Fixup leading description.
Better detail zsh completion files.
--help and some exact mode tests.
Read from STDIN if necessary after reading mode. Remove some redundant
evals. Better document --relative after tripping over something. Other
POD improvements.
Bugfix: must manually reverse modal phrase if called for.
Add some modal tests.
Standardize on \ tho probably useless.
Initial work on completion.
Document canonical for transpositions.