- Add option to disable by default
- Use local-vars hook to allow per-project enable/disable
- Don’t enable helm-gtags-mode (no need)
- Move emacs bindings from helm-gtags-mode-map to ggtags-mode-map
The keybindings in octave-mode don't follow the same standards as the
others. Also use the function `spacemacs/set-leader-keys-for-major-mode`
for setting mode specific keys.
