Cannot serialize Telepath Types

[TiiFuchs]

It should be possible to serialize and unserialize Telepath Types without a problem.

Currently this is not possible due to the fact that every type keeps a copy of the Bot object.
We should remove this in a __serialize method and should make sure that it is not needed and where it is used, it should check if it is set beforehand.

See here for reference: TiiFuchs/wallaby@e6f4c76