Categorical Parameters broken in the `hypermapper-v3` branch

[panzerox123]

Hey folks, Categorical parameters don't work while using the hypermapper-v3 branch, here are the changes that I had to make in order to get it working:

File: hypermapper/param/parameters.py:

• convert does not return string value -> Line 639 needs to return self.string_values...​ and not self.values...​
• Constructor for CategoricalParameter does not create the correct val_indices dictionary -> Line 552 must be in the form {i.item(): i...​ and not {i: i...​

Thanks, Kunal Bhat

[ErikOrm]

Thanks! I added the proposed fixes and added a test for categorical variables in the test suite.