- Add an adapter shell script for running the nnenum python module under
  'config/bin/'. The user is supposed to set the PYTHONPATH env variable to the
  nnenum directory
- Use vnnlib driver

- Add support for neural network as array in language.ml
- Translate csv record as vnnlib constraints in dataset.ml
- Add simple dataset normalization functionalities in dataset.ml
- Add vnnlib printer (as smtlib printer with direct real support)
- Add vnnlib driver for PyRAT
- Rework onnx and nnet parsers to not fail on non-mandatory information