Shortcut for settings dialog

[verheyenkoen]

I don't know about Windows and Linux but on MacOS there is a convention for settings dialogs to have a shortcut Cmd+, (comma). According to issue #4 this was once implemented but it is now gone, which is very annoying as you now have to scout the menu's and it isn't in the "Edit" menu where most apps put there preferences menu item.

So not sure if this is gone because of a bug or if this was once removed on purpose but this should be there.