support POWERLEVEL9K_DIR_TRUNCATE_BEFORE_MARKER=first; see romkatv#669

wizard bug fixes: screen redraws, spurious errors, frame selection

fixes romkatv#668

notes

use better looking flat and slanted separators in unicode mode

pull upstream changes from gitstatus

s/terraform/tf/ in ascii icons

add 'sleep 3' after changing iTerm2 settings; just trying random shit

s/hight/height/

pull upstream changes from gitstatus