bug in applying non-flat prior

[seshnadathur]

The code gives an error when the user attempts to use a Gaussian prior for any nuisance parameter, by including a line like
data.parameters['xyz'] = [10.0, 0, 20, 0.5, 1, 'nuisance', 'gaussian', 10.0, 1]
in the input parameter file (as the Prior module is designed to read, although this is not explained very well in the documentation).

If this line is included, the parameter xyz is then not recognised as a nuisance parameter. The cause of this bug is in line 999 of the file data.py, which should read:
self['role'] = array[5]
In the current implementation it is taking the provided sigma value of the prior as the parameter role.

[brinckmann]

Thanks! I'll fix it in the upcoming release.
By the way, this github page is no longer being maintained, so please report bugs on our new github page: https://github.com/brinckmann/montepython_public
Best,
Thejs