Needs to be rewritten to conform to new Rotor class.
Changed to Walter's CA_Rotor.
Walter's Encryptor class, modified for up to 4 Rotors. Added static
historical rotors and reflector mappings.
First commit on Plugboard, pretty simple. Could be merged with Rotors.
Puts Rotors and Plugboard together and operates with them. Pretty simple
for now... planned to add back-end functions for GUI features as needed.
Simple test class to ensure symmetry and that it works. Does NOT ensure
that it conforms to historic Enigma. Waiting to establish formal test
cases for that.