This PR adds a
A test case (and some minor workarounds for units issues) with a CTA 1DC response file are included.
This is just a first step (pair coding with @robertazanin), the next steps would be to add a
Reviewing the old
Some more fixes and cleanup to the IRF classes added, discussed with @joleroi offline.
And fixed a fail that's unrelated to this PR on travis-ci in
Tests and docs work locally, I think this is ready to go. Merging now.