clarify units
fix case oddity
set default for $SVDIR
cargo cult from example: http://www.zsh.org/mla/workers/2014/msg01150.html
refactor code based on Oliver Kiddle's recommendation: http://www.zsh.org/mla/workers/2014/msg01161.html
make good choices (??)
correct name of autocompletion package
more useful minotaur