Previous project is deleted.
1- 'cryptography' package is created.
2- 'cryptography.classic' package is also added. All classes related to classic cryptography will go into this package. This is held also for quantum cryptography. Another package named 'cryptography.quantum' is added. This package will contain all classes and interfaces related to quantum cryptography.
3- Bit interface corresponds to a single bit. It is very abstract and doesn't anything about the system the bit is working in.
4- ClassicBit and Qubit classes correspond to real bits in classic and quantum cryptography systems.