PLUGINS: vi-mode: Added extra vim-like bindings

- 'gg': go to the beginning of the buffer history
- 'G': go to the end of the buffer history
- 'u': properly undo multiple changes
- '^R: while in normal mode re-do changes

plugins/vi-mode/vi-mode.plugin.zsh

@@ -44,6 +44,12 @@ bindkey '^?' backward-delete-char
 bindkey '^h' backward-delete-char
 bindkey '^w' backward-kill-word
 
+# Some extra vim like bindings
+bindkey -a 'gg' beginning-of-buffer-or-history
+bindkey -a 'G' end-of-buffer-or-history
+bindkey -a 'u' undo
+bindkey -a '^R' redo
+
 # if mode indicator wasn't setup by theme, define default
 if [[ "$MODE_INDICATOR" == "" ]]; then
   MODE_INDICATOR="%{$fg_bold[red]%}<%{$fg[red]%}<<%{$reset_color%}"