We load everything from the fast_cve module to the functions module.
Specifically, compute_cve should take DO, muD, and method as inputs and return a cve DO. It calls cve_method through the method and passes DO and muD to compute the cve based on the global_tth. We then interpolate the cve to the original grid.
Based on discussions in #87:
fast_cvemodule to thefunctionsmodule.compute_cveshould takeDO,muD, andmethodas inputs and return acve DO. It callscve_methodthrough themethodand passesDOandmuDto compute the cve based on theglobal_tth. We then interpolate the cve to the original grid.