Should be significantly less unecessary repeating via inheritance.
SingleItem display formatting tweaked.
Minor additional tweaks, mostly in logic of code.

Updates list UI to be easier to follow.
Most of the program/UI should have proper error handling now. SingleItem display still needs work.
Should now be able to correctly add all droid types to collection.

Implimented an array in droid collection to hold user-created droids.
Started very basic display of said droids to console.
Added validation to most user selection when making a new droid.

Moves user selection to proper class. Was previously in the collection class which didn't make sense.

Most menus should now display properly.
Most user selection should properly save values, although there's little to no error handling yet.