Added alias: gitka for `gitk --all`

dotfiles/bash/global-before.bashrc

@@ -17,6 +17,7 @@ alias ll='ls -lh'
 alias open='gnome-open'
 alias diff='diff -u'
 alias pad4='sed -e "s/^/    /"'
+alias gitka='gitk --all'
 
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