zsh:glog: Do not pass --graph by default

`--graph` can get very slow for large repos with many branches. Make
`glog` independent of it and rather add an alias that uses `glog
--graph`.

.config/zsh/zshrc.d/30-alias.zsh

@@ -70,7 +70,8 @@ fi
 	alias gpush='git push'
 	alias gpull='git pull'
 	alias gl='glog'
-	alias gl{l,ogg}='glog --branches --remotes'
+	alias gll='glog --graph'
+	alias gl{ll,ogg}='glog --graph --branches --remotes'
 	alias gr='git rebase'
 	alias grc='git rebase --continue'
 	alias grcia='git rebase --committer-date-is-author-date'