finished the hub's logic, half done with the interfaces, and hopefully working on pi logic soon

style.md

@@ -44,6 +44,11 @@ each line.
 Unless it's the bit-length of a byte or something that's commonly
 known and obvious at first glance, use a constant to store it.
 
+## Arrays
+Avoid using arrays that are more than 2 dimensions.  If you need to
+store multiple dimensions of data, consider using `struct` to clarify
+what each dimension stores.
+
 ## Naming schemes
 Names are only meaningful to humans, and the rationale behind the
 following guidelines is to allow anyone reading the code to know what