Fix doctests and offers to supply the current writing token to generate field
Remove debug printf from Needleman.c
Update unitest regarding new mutations in ASCII.
Improve basic mutation mechanisms for all the Types.
Upgrade unitest to replace generate method by specialize method in BitArray and IPv4 types.
Rename generate into specialize in AbstractField class
Prepare the normalization of relation variables in DomainFactory
A Variable can be defined as mutable and/or learnable
add some debug messages
Apply new parser strategy in Data class
add import for Size class
Upgrade the parsing strategy in Nodes variables
Replace old linkedValues by a dict based approach as part of the new parsing strategy
remove useless method
remove useless code
Rename generate method into specialize method in Field class
Upgrade EncodingFunctions regarding the new (simpler) parsing strategy
Remove useless debug message
Upgrade unitests in Session class
Upgrade symbol regarding new field parsing strategy