Suggestion: file inclusion

[sleepyMonad]

I was thinking, as my configuration file is growing, and syntax support for this kind of file isn't great in my editor, that it would be nice to have file inclusion on the menu level. That way, I could develop new submenus independenly, and when finished, include them in the main configuration. Files would remain more managable as well. Lazy evaluation, as only evaluating the included file when it is effectively needed, could also be a consideration.

Just a suggestion, it's already great as it is.