Add lua-mode.
Add quick amend binding for magit.
Swap 's' and 'S' keybindings for projectile.
Don't use tabs to indent, except for java.
Dired multi-occur.
Defun to disable key-chord locally in a buffer.
Add project-explorer, bound to <f1>.

Key-chord is disabled in project-explorer buffers, because the default
navigation keys (j/k) conflict with my global chords (jj/kk).