emacs: enable ggtags-mode for c++ files
emacs: enable god-mode in git-commit-mode
emacs: bind repeat to C-z

give repeat a convenient key binding, and also avoid accidentally
minimising the window when I accidentally press C-z. suspend-frame can
still be accessed through "C-x C-z" if required.
emacs: enable smooth-scrolling

makes it easier to scroll through a file without losing your place