Add `log4cl-fast-level-selection-single-key' option that controls if `log4cl-fast-level-selection' quits after single level change or shows the menu window at all, plus some cleanups
Add `log4cl-fast-level-selection-single-key' option that controls if
`log4cl-fast-level-selection' quits after single level change or shows
the menu window at all, plus some cleanups

7max/log4cl,sharplispers/log4cl,sharplispers/log4cl,7max/log4cl