FLRWSolver provides cosmological initial conditions based on a Friedmann-Lemaitre-Robertson-Walker (FLRW) spacetime, with and without small perturbations.

It also contains a set of tools to create and analyze the data.

If can be found at: https://github.com/hayleyjm/FLRWSolver_public

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2549/inlcude-flrwsolver-in-et