Deleted print statements, superfluous log, TODOs, added a few comments.

Added the fields submodule with field, shapes and vectors!
Added the vis module (not viz) with colors, decorators, plot2d, tools.
Added version.
Minor changes in pyramid.

test: changed the dataloader TestCase
pyramex: first experiments with Cython and SCons
dataloader: changed the order in which the dimensions are saved,
        z_len is no longer part of the magnetization (this was the reason why
        we had to divide by res, which is equal to z_len for calculating coeff)
magcreator: shapes are now separate functions, mag_shape is now an argument for
        one unified create_hom_mag-function
phasemap: unification of the phasemap-functions in real space (just the pixel-
        field is calculated different now)

Removed old scripts (AnalyticSolution and DataLoader)
Added several template testcases

because Spyder can't create projects in subfolders -.-

jacobi matrix now contains the derivatives instead of descriptive strings