💥 Change first arg of load! macro

load!'s first argument is no longer a symbol (that will cause
void-variable errors now) to save on unnecessary interning and simplify
compile-time logic. It accepts any valid form that evaluates to a string
now.

If you use load!, you need to change its argument to a string!

e.g. (load! +my-module) => (load! "+my-module")

modules/ui/popup/config.el

@@ -160,4 +160,4 @@ deleted.")
 ;; Hacks
 ;;
 
-(load! +hacks)
+(load! "+hacks")