Key Comparison and Storage

-Debugged Input/Keychain comparison
-Implemented and tested loading and saving the Keychain to EEPROM
-Adding new passwords and removing old ones works, but isn't physically
triggerable IRL yet
-Removed more unnecasary methods and refactored some within the Keychain
class

Progress (* indicates tested completion):
*Input receipt
*Input Parsing
*Static Key Comparison
*Dynamic Key Comparison
'Mode' Logic for programming new keys and public access
Non-serial state indication
Soft-Reset and other fail-safes
General Clean-Up