FourierFlows/FourierFlows.jl v0.0.2

Adds new composite type state that contains the current time t, timestep step, and solution sol (or solc and solr for DualState.

Also adds a much simplifier version of the barotropicqg module along with two example scripts.

Finally, adds many tests functions for the core modules and the twodturb and barotropicqg physics modules.