Current version of isitgr causes silent failure

[c-d-leonard]

I had the current version of isitgr (1.0.5) installed and tried to run the CCLX MG examples and the benchmarks. With this version of isitgr, a cosmology object with MG parameters returns a GR power spectrum with the same cosmology parameters. Downgrading to v1.0.2 fixes this issue.

Can we document this better please (or better yet, fix the implementation so it works with the up to date version of isitgr or at least errors out)? At the moment if you just pip install isitgr you have silent failures which is bad.

[damonge]

@c-d-leonard , with apologies for the massive delay, is this an issue with CCL or with isitgr?