Encoder and Decoder class

[David Lucas]

We propose to create Encoder and Decoder as objects, with :

Encoder class

• encode() : Message Space -> Ambient Space
• unencode() : Ambient Space -> Message Space (throws exception if input not in code, check can be optionally disabled)

Decode class

• decode_to_code() : Ambient -> Ambient
• decode_to_message() : Ambient -> Message