the {n…n} glob pattern does not work outside of zsh

not all methods and paramters were controlled

after my 1 year break in which I can not overview
the changes I try to set a new start

in order to offer plotting of multiple features

with higher values

change my own deviation method to numpy std. Leads to different results

from strategy

is not transfered to numpy array yet

rename contrasts module to views
create contrasts module
convert luminance function to method of LightDark Class
modify compose method to work with contrast module

external function calculates contrast value and returns Image with
contrast values instead of channel value (3>1). This is calcualted with
np.histogram

accordingly to the scope of the class which now is not a specific
contrast but a way to represent contrast. This is more consistent with
what the data represents and how to work with the data.

only two for testing reason
subclassing a subcalls of numpy was hard due to the use of __new__ and
__array_finalize__
max recursion errors appear now after multiple use of derive. Do I need
numpy's __del__ method?

just as a reference implementation for the value contrast and not generacilly