Aliases

Modify directory listing aliases to make more sense. Remove conflicting helper
function (mcd conflicts with mtools).

lib/directories.zsh

@@ -37,8 +37,3 @@ cd () {
 alias md='mkdir -p'
 alias rd=rmdir
 alias d='dirs -v'
-
-# mkdir & cd to it
-function mcd() { 
-  mkdir -p "$1" && cd "$1"; 
-}