Predicting on mouse alleles fails due to erroneous nomenclature conversion

[jonasscheid]

Predicting 8mers on mouse alleles with syfpeithi, e.g. H2-Kb keeps resulting in

No model found for H-2-Kb with length 8

although the underlying matrix is available.

The issue here is, that self.convert_alleles converts the given H2-Kb to the internal epytope representation K_b. This representation is then used here to load the matrix K_b_8. However it is not found, because the matrix file is called H2_Kb_8.py.

For HLA alleles the conversion is working, so I would propose to change the files and strip H2.
We should also look into how the nomenclature is handled internally in external predictors (netmhc family)

Let's also increment the tests of the epitopeprediction with mouse alleles accordingly.