Realized that the program requirements were simpler than I initially thought. As result,
the Droid_Generic class had no real purpose in the program as-is, and was removed. All
variables/methods associated with it have been transfered up into the Abstract Droid class.

As far as the front end, program should behave identically to last commit.

NOTE: The program is currently set so that all features have basically the same cost.
Should the program need to be expanded in a way that adjusts the cost of each feature,
look back into the previous commit with the "Droid_Generic" class. It was essentially set
up so that each material/color/model selection had an associated cost, as well as
the start of the logic for "clearance" and "random price" (including cents) functionality.
Once setup in Droid_Generic, the same functionality should be able to be implimented
in inheriting classes fairly easily, creating semi-dynamic prices for all features.

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.