Proposed library structure

[alphaville]

Here is a short draft proposal for your library code

Example:

import pdesolvers as pde
import numpy as np

x_from = np.array([0, 0])
x_to = np.array([1, 2])
n_points = np.array([10, 20])

myGrid = pde.FDMGrid.create_uniform_grid(x_from, x_to, n_points, coordinate_labels=["x", "t"])
solver = pde.HeatEquationExplicitSolver(myGrid)
solution_grid = solver.solve()

[chemardes]

if the user's passing in only the kappa constant, will grid be used to set the values for length/time?