v2024.04

Simplified and flexible framework for quick visualization of OPM Flow geological models.
The approach is the generation of PNG figures from static (e.g, porosity, pore volume fluid in place numbers)
and dynamic (e.g., pressure, fluid saturations) properties given any 2D slide (e.g., the middle part of a reservoir in the xy plane),
as well as plotting any given summary vector (e.g., field gas in place a.k.a fgip).

The plopm tool can be useful for quick inspection of geological models, as well as for generation of nice
figures for papers/presentations. Also, plopm can plot summary results from different simulation cases in the same figure,
as well as the difference between given dynamic variables (e.g., pressure) for two different simulations cases. In addition, plopm can convert OPM Flow output files to vtk, which allows to use other visualization/postprocessing tools (e.g., paraview).