F1 & F4 dont do anything on mac

Pressing F1 does nothing. The function that is supposed to be called, restartExec, is never called.

Pressing F4 brings up launchpad instead of toggling the real-time eval.

Currently I am using window.onkeydown for my shortcuts.

But instead I could register a global shortcut, (which would take effect even if window is not in focus), or I could register a menu shortcut.

https://github.com/electron/electron/blob/master/docs/tutorial/keyboard-shortcuts.md