Add back the `-` alias to go to the previous directory

The alias was removed in #3564. A couple of users were using it, so I'm adding it back.

Add back the `-` alias to go to the previous directory
4fbfb149 · Marc Cornellà · 5e950d4f · 4fbfb149
Commit 4fbfb149 authored Dec 13, 2015 by Marc Cornellà
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directories.zsh lib/directories.zsh +1 -0

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--- a/lib/directories.zsh
+++ b/lib/directories.zsh
@@ -8,6 +8,7 @@ alias -g ....='../../..'
 alias -g .....='../../../..'
 alias -g ......='../../../../..'

+alias -- -='cd -'
 alias 1='cd -'
 alias 2='cd -2'
 alias 3='cd -3'