ENH: Support reading in perturbation vectors in `gambit-ipa`

[tturocy]

Overview

A run of the iterated polymatrix approximation algorithm takes as input a perturbation vector.

This is not currently available via the command-line gambit-ipa.

Actions

The interface to gambit-liap can be imitated here - although IPA takes perturbation vectors these can be thought of as being isomorphic to mixed strategies.

Specifically, add:

1. The -s argument which will read perturbation vectors from a file
2. The -n argument which will generate perturbation vectors randomly

-s and -n should be mutually exclusive (so generate an error if both are specified).

The help string and the Sphinx documentation should be amended accordingly.

[Avan14]

Hi @tturocy,

I’m interested in contributing to this issue if it’s still available.
Could you assign this issue to me?