Coeff

[makingthematrix]

A simple wrapper over floats, with assertions:

• values only in the range of 0.0 .. 1.0
• mathematical operations (sum, substraction, multiplication) work only in this range

There should be a "normalization" method which, given a vector of floats, returns a vector of coeffs where the sum of all coeffs is Coeff(1.0).

Also, utility methods for Coeff(0.0) and Coeff(1.0).

[makingthematrix]

I decided to use a more flexible Coeff struct, working on f64 in the range of <0.0, 1.0>, instead of integers.

When all is done, it would be nice to take a look at newtype_derive and shorten the code.